1. Mosquito repellents don't repel. They hide you. The spray blocks the mosquito's sensors so they don't know you're there.
2. Dentists have recommended that a toothbrush be kept at least 6 feet away from a toilet to avoid airborne particles resulting from the flush.
3. The liquid inside young coconuts can be used as substitute for blood plasma.
4. No piece of paper can be folded in half more than 7 times.
5. Donkeys kill more people annually than plane crashes.
6. You burn more calories sleeping than you do watching television.
7. Oak trees do not produce acorns until they are fifty years of age or older.
8. The first product to have a bar code was Wrigley's gum.
9. The king of hearts is the only king without a mustache.
10. A Boeing 747s wingspan is longer than the Wright brother's first flight.
11. American Airlines saved $40,000 in 1987 by eliminating 1 olive from each salad served in first-class.
12. Venus is the only planet that rotates clockwise.
13. Apples, not caffeine, are more efficient at waking you up in the morning.
14. The plastic things on the end of shoelaces are called aglets.
15. Most dust particles in your house are made from dead skin.
16. The first owner of the Marlboro Company died of lung cancer.
17. Michael Jordan makes more money from Nike annually than all of the Nike factory workers in Malaysia combined.
18. Marilyn Monroe had six toes. (rumor)
19. All US Presidents have worn glasses. Some just didn't like being seen wearing them in public.
20. Walt Disney was afraid of mice.
21. Pearls melt in vinegar.
22. Thirty-five percent of the people who use personal ads for dating are already married.
23. The three most valuable brand names on earth: Marlboro, Coca-Cola, and Budweiser, in that order.
24. It is possible to lead a cow upstairs...but not downstairs.
25. A duck's quack doesn't echo and no one knows why. (Or does it? http://www.acoustics.salford.ac.uk/acoustics_world/duck/duck.htm)
26. The reason firehouses have circular stairways is from the days when the engines were pulled by horses. The horses were stabled on the ground floor and figured out how to walk up straight staircases.
27. Richard Millhouse Nixon was the first US president whose name contains all the letters from the word 'criminal.' The second was William Jefferson Clinton.
28. Turtles can breathe through their butts.
29. Butterflies taste with their feet.
30. In 10 minutes, a hurricane releases more energy than all of the world's nuclear weapons combined.
31. On average, 100 people choke to death on ball-point pens every year.
32. On average people fear spiders more than they do death.
33. Ninety percent of New York City cabbies are recently arrived immigrants.
34. Elephants are the only animals that can't jump.
35. Only one person in two billion will live to be 116 or older.
36. Women blink nearly twice as much as men.
37. It's physically impossible for you to lick your elbow. (or can you? http://www.uvm.edu/~dfisher1/random/elbow.jpg http://www.uvm.edu/~dfisher1/random/elbow2.jpg)
38. The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
39. A snail can sleep for three years.
40. No word in the English language rhymes with 'MONTH.'
41. Average life span of a major league baseball: 7 pitches.
42. Our eyes are always the same size from birth, but our nose and ears never stop growing. SCARY!!!
43. The electric chair was invented by a dentist.
44. All polar bears are left handed.
45. In ancient Egypt, priests plucked EVERY hair from their bodies,
including their eyebrows and eyelashes.
46. An ostrich's eye is bigger than its brain.
47. TYPEWRITER is the longest word that can be made using the letters only on one row of the keyboard.
48. 'Go', is the shortest complete sentence in the English language.
49. If Barbie were life-size, her measurements would be 39-23-33. She would stand seven feet, two inches tall. Barbie's full name is Barbara Millicent Roberts.
50. A crocodile cannot stick its tongue out.
51. The cigarette lighter was invented before the match.
52. Almost everyone who reads this will try to lick their elbow.
Tuesday, October 13, 2009
50 Interesting Facts
1. If you are right handed, you will tend to chew your food on your right side. If you are left handed, you will tend to chew your food on your left side.
2. If you stop getting thirsty, you need to drink more water. For when a human body is dehydrated, its thirst mechanism shuts off.
3. Chewing gum while peeling onions will keep you from crying.
4. Your tongue is germ free only if it is pink. If it is white there is a thin film of bacteria on it.
5. The Mercedes-Benz motto is “Das Beste oder Nichts” meaning “the best or nothing”.
6. The Titanic was the first ship to use the SOS signal.
7. The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
8. The average person who stops smoking requires one hour less sleep a night.
9. Laughing lowers levels of stress hormones and strengthens the immune system. Six-year-olds laugh an average of 300 times a day. Adults only laugh 15 to 100 times a day.
10. The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
11. Dalmatians are born without spots.
12. Bats always turn left when exiting a cave.
13. The ‘v’ in the name of a court case does not stand for ‘versus’, but for ‘and’ (in civil proceedings) or ‘against’ (in criminal proceedings).
14. Men’s shirts have the buttons on the right, but women’s shirts have the buttons on the left.
15. The owl is the only bird to drop its upper eyelid to wink. All other birds raise their lower eyelids.
16. The reason honey is so easy to digest is that it’s already been digested by a bee.
17. Roosters cannot crow if they cannot extend their necks.
18. The color blue has a calming effect. It causes the brain to release calming hormones.
19. Every time you sneeze some of your brain cells die.
20. Your left lung is smaller than your right lung to make room for your heart.
21. The verb “cleave” is the only English word with two synonyms which are antonyms of each other: adhere and separate.
22. When you blush, the lining of your stomach also turns red.
23. When hippos are upset, their sweat turns red.
24. The first Harley Davidson motorcycle was built in 1903, and used a tomato can for a carburetor.
25. The lion that roars in the MGM logo is named Volney.
26. Google is actually the common name for a number with a million zeros.
27. Switching letters is called spoonerism. For example, saying jag of Flapan, instead of flag of Japan.
28. It cost 7 million dollars to build the Titanic and 200 million to make a film about it.
29. The attachment of the human skin to muscles is what causes dimples.
30. There are 1,792 steps to the top of the Eiffel Tower.
31. The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
32. Human hair and fingernails continue to grow after death.
33. It takes about 20 seconds for a red blood cell to circle the whole body.
34. The plastic things on the end of shoelaces are called aglets.
35. Most soccer players run 7 miles in a game.
36. The only part of the body that has no blood supply is the cornea in the eye. It takes in oxygen directly from the air.
37. Every day 200 million couples make love, 400,000 babies are born, and 140,000 people die.
38. In most watch advertisements the time displayed on the watch is 10:10 because then the arms frame the brand of the watch (and make it look like it
is smiling).
39. Colgate faced big obstacle marketing toothpaste in Spanish speaking countries. Colgate translates into the command “go hang yourself.”
40. The only 2 animals that can see behind itself without turning its head are the rabbit and the parrot.
41. Intelligent people have more zinc and copper in their hair.
42. The average person laughs 13 times a day.
43. Do you know the names of the three wise monkeys? They are:Mizaru(See no evil), Mikazaru(Hear no evil), and Mazaru(Speak no evil)
44. Women blink nearly twice as much as men.
45. German Shepherds bite humans more than any other breed of dog.
46. Large kangaroos cover more than 30 feet with each jump.
47. Whip makes a cracking sound because its tip moves faster than the speed of sound.
48. Two animal rights protesters were protesting at the cruelty of sending pigs to a slaughterhouse in Bonn. Suddenly the pigs, all two thousand of them, escaped through a broken fence and stampeded, trampling the two hapless protesters to death.
49. If a statue in the park of a person on a horse has both front legs in the air, the person died in battle; if the horse has one front leg in the air, the person died as a result of wounds received in battle; if the horse has all four legs on the ground, the person died of natural cause.
50. The human heart creates enough pressure while pumping to squirt blood 30 feet!!
2. If you stop getting thirsty, you need to drink more water. For when a human body is dehydrated, its thirst mechanism shuts off.
3. Chewing gum while peeling onions will keep you from crying.
4. Your tongue is germ free only if it is pink. If it is white there is a thin film of bacteria on it.
5. The Mercedes-Benz motto is “Das Beste oder Nichts” meaning “the best or nothing”.
6. The Titanic was the first ship to use the SOS signal.
7. The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
8. The average person who stops smoking requires one hour less sleep a night.
9. Laughing lowers levels of stress hormones and strengthens the immune system. Six-year-olds laugh an average of 300 times a day. Adults only laugh 15 to 100 times a day.
10. The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
11. Dalmatians are born without spots.
12. Bats always turn left when exiting a cave.
13. The ‘v’ in the name of a court case does not stand for ‘versus’, but for ‘and’ (in civil proceedings) or ‘against’ (in criminal proceedings).
14. Men’s shirts have the buttons on the right, but women’s shirts have the buttons on the left.
15. The owl is the only bird to drop its upper eyelid to wink. All other birds raise their lower eyelids.
16. The reason honey is so easy to digest is that it’s already been digested by a bee.
17. Roosters cannot crow if they cannot extend their necks.
18. The color blue has a calming effect. It causes the brain to release calming hormones.
19. Every time you sneeze some of your brain cells die.
20. Your left lung is smaller than your right lung to make room for your heart.
21. The verb “cleave” is the only English word with two synonyms which are antonyms of each other: adhere and separate.
22. When you blush, the lining of your stomach also turns red.
23. When hippos are upset, their sweat turns red.
24. The first Harley Davidson motorcycle was built in 1903, and used a tomato can for a carburetor.
25. The lion that roars in the MGM logo is named Volney.
26. Google is actually the common name for a number with a million zeros.
27. Switching letters is called spoonerism. For example, saying jag of Flapan, instead of flag of Japan.
28. It cost 7 million dollars to build the Titanic and 200 million to make a film about it.
29. The attachment of the human skin to muscles is what causes dimples.
30. There are 1,792 steps to the top of the Eiffel Tower.
31. The sound you hear when you crack your knuckles is actually the sound of nitrogen gas bubbles bursting.
32. Human hair and fingernails continue to grow after death.
33. It takes about 20 seconds for a red blood cell to circle the whole body.
34. The plastic things on the end of shoelaces are called aglets.
35. Most soccer players run 7 miles in a game.
36. The only part of the body that has no blood supply is the cornea in the eye. It takes in oxygen directly from the air.
37. Every day 200 million couples make love, 400,000 babies are born, and 140,000 people die.
38. In most watch advertisements the time displayed on the watch is 10:10 because then the arms frame the brand of the watch (and make it look like it
is smiling).
39. Colgate faced big obstacle marketing toothpaste in Spanish speaking countries. Colgate translates into the command “go hang yourself.”
40. The only 2 animals that can see behind itself without turning its head are the rabbit and the parrot.
41. Intelligent people have more zinc and copper in their hair.
42. The average person laughs 13 times a day.
43. Do you know the names of the three wise monkeys? They are:Mizaru(See no evil), Mikazaru(Hear no evil), and Mazaru(Speak no evil)
44. Women blink nearly twice as much as men.
45. German Shepherds bite humans more than any other breed of dog.
46. Large kangaroos cover more than 30 feet with each jump.
47. Whip makes a cracking sound because its tip moves faster than the speed of sound.
48. Two animal rights protesters were protesting at the cruelty of sending pigs to a slaughterhouse in Bonn. Suddenly the pigs, all two thousand of them, escaped through a broken fence and stampeded, trampling the two hapless protesters to death.
49. If a statue in the park of a person on a horse has both front legs in the air, the person died in battle; if the horse has one front leg in the air, the person died as a result of wounds received in battle; if the horse has all four legs on the ground, the person died of natural cause.
50. The human heart creates enough pressure while pumping to squirt blood 30 feet!!
Monday, October 12, 2009
Leaning Tower of Pisa has never been straight
Soon after building started in 1173, the foundation of the Pisa tower settled unevenly. Construction was stopped, and was continued only a 100 year later. It then became visibly clear that the Tower of Pisa is leaning, tilting to the south.
The Leaning Tower of PisaSince regular measuring of the tower began in 1911, the top of the tower has moved 1,2 millimetres (0,05 inch) per year. Today the top of the Tower of Pisa is some 5,3m (17,4 ft) off-centre.
After the bell tower of the Cathedral of Pavia collapsed in 1989, the Consorzio Progetto Torre di Pisa (Tower of Pisa Project Consortium) commissioned engineers to stabilise the Leaning Tower. Because the Tower tilted in different directions in its first years, it is slightly curved, like a banana. Engineers are working on the footing of the Tower rather than the structure, hoping to ease the top back about 20 cm (about 8 inches). But it means that the 800-year old tower will remain leaning.
The Leaning Tower of Pisa stands in the Piazza dei Miracoli (Miracle Square) in the town of Pisa, Italy.
There are 296 steps to the top of the Leaning Tower of Pisa.
Oldest human skeleton offers new clues to evolution
(CNN) -- The oldest-known hominid skeleton was a 4-foot-tall female who walked upright more than 4 million years ago and offers new clues to how humans may have evolved, scientists say.
This sketch shows what a 4 million-year-old hominid, nicknamed Ardi, may have looked like.
This sketch shows what a 4 million-year-old hominid, nicknamed Ardi, may have looked like.
Scientists believe that the fossilized remains, which were discovered in 1994 in Ethiopia and studied for years by an international team of researchers, support beliefs that humans and chimpanzees evolved separately from a common ancestor.
"This is not an ordinary fossil. It's not a chimp. It's not a human. It shows us what we used to be," said project co-director Tim White, a paleontologist at the University of California, Berkeley.
Ardipithecus ramidus, nicknamed "Ardi," is a hominid species that lived 4.4 million years ago in what is now Aramis, Ethiopia. That makes Ardi more than a million years older than the celebrated Lucy, the partial ape-human skeleton found in Africa in 1974.
Ardi's 125-piece skeleton includes the skull, teeth, pelvis, hands and feet bones. Scientists say the data collected from Ardi's bone fragments over the past 17 years push back the story of human evolution further than previously believed.
"In fact, what Ardipithecus tells us is that we as humans have been evolving to what we are today for at least 6 million years," C. Owen Lovejoy, an evolutionary biologist at Kent State University and project anatomist, said Thursday.
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Analysis of Ardi's skeleton reveals that she weighed about 110 pounds, had very long arms and fingers, and possessed an opposable big toe that would have helped her grasp branches while moving through trees.
Ardi's brain was believed to be the size of a chimp's, but she also had many human-like features, such as the ability to walk upright on two legs. Her "all-purpose type" teeth indicate that she probably ate a combination of plants, fruits and small mammals, scientists say.
"The anatomy behind this behavioral combination is very unexpected and is certain to cause considerable rethinking of not only our evolutionary past, but also that of our living relatives: the great apes," said Alan Walker, professor of biological anthropology at Pennsylvania State University.
Many scientists hypothesize that humans took a different evolutionary trajectory from those of chimpanzees, bonobos and gorillas. Ardi's findings help challenge earlier beliefs that humans evolved from chimpanzees, their closest genetic relatives, scientists say.
Researchers are still trying to pinpoint when the two lineages -- chimps and humans -- split from their common ancestor.
Digging up the past has not been easy.
Scientists stumbled upon the Ardipithecus fossil in 1994 when a graduate student found a single upper molar tooth. The rest of Ardi's fossilized bones, sandwiched between layers of volcanic rock, took three years to be recovered and many more to be analyzed.
"In many ways, the discovery of Ardipithecus has been like a marathon," White said.
"Ardipithecus ramidus and its prevailing anatomy revolutionize the way most of us understood the earlier part of our evolutionary history," said team member Yohannes Haile-Selassie, paleontologist at the Cleveland Museum of Natural History.
The Ardi findings are the work of 47 paleontologists and geologists representing 10 countries. The results will be published Friday in 11 articles in a special edition of the journal Science.
Until now, Australopithecus, nicknamed "Lucy," was the oldest fossil studied by scientists seeking to explain human evolution. Lucy is believed to have lived about 3.2 million years ago in what is now Ethiopia.
Many scientists credit Ethiopia with taking the lead in helping the world better understand the origins of humans.
"This finding points to a deeper sense of our [humans'] interconnectedness," Samuel Assefa, Ethiopian ambassador to the United States, said Thursday. "We are all Ethiopians at heart."
Ardi's skeleton resides in the National Museum of Ethiopia in Addis Ababa.
Sunday, October 11, 2009
The word "dollar" has its origins in the Roman Empire
A mining hole in the mountains of Bohemia produced so much silver it became the official source of coinage for the entire Holy Roman Empire. The mine was in a valley called Joachimsthal, and the coins came to have the same name: "Joachimstalers." Over time this became shortened to "Talers" and over more time, the American pronunciation of the word became the name for the currency that you would like to have in your pocket.
The $ sign was designed in 1788 by Oliver Pollock, a New Orleans businessman, using a combination of Spanish money symbols.
The $ sign is used in many countries other than the United States, including the use for the Argentine peso, Brazilian real, Cape Verde escudo, Chilean peso, Colombian peso, Cuban peso, Dominican peso, Mexican peso, Tongan pa'anga and Uruguayan peso. Other countries that trade in their currency as dollars are Australia, Bahamas, Canada, Liberia and others
If you stack one million US$1 bills, it would be 110m (361 ft) high and weight exactly 1 ton. A million dollars' worth of $100 bills weighs only 10 kg (22 lb). One million dollars' worth of once-cent coins (100 million coins) weigh 246 tons.
This is the silver coin first struck as a "Guldiner" in 1486 in Tyrol. The name "Taler" was first given to the silver coin of the same size struck in Joachimstal in Bohemia.
The $ sign was designed in 1788 by Oliver Pollock, a New Orleans businessman, using a combination of Spanish money symbols.
The $ sign is used in many countries other than the United States, including the use for the Argentine peso, Brazilian real, Cape Verde escudo, Chilean peso, Colombian peso, Cuban peso, Dominican peso, Mexican peso, Tongan pa'anga and Uruguayan peso. Other countries that trade in their currency as dollars are Australia, Bahamas, Canada, Liberia and others
If you stack one million US$1 bills, it would be 110m (361 ft) high and weight exactly 1 ton. A million dollars' worth of $100 bills weighs only 10 kg (22 lb). One million dollars' worth of once-cent coins (100 million coins) weigh 246 tons.
This is the silver coin first struck as a "Guldiner" in 1486 in Tyrol. The name "Taler" was first given to the silver coin of the same size struck in Joachimstal in Bohemia.
Untimely inventions
In 1834, Charles Babbage (1792-1871) designed the Analytical Engine, the precursor of the computer. He was unable to obtain funding for it from the government, who thought it would be worthless.
The first fax process was patented in 1843 by Alexander Bain, but fax machines went into service only in 1964. In 1888, Frank Sprague completed an electric railway, but electric locomotives were introduced only in 1895. Eugene Ely landed a plane on a boat in 1911, but aircraft carriers weren't perfected for another 20 years.
The first parachute jump was made from a hot air balloon by Andre-Jacques Garnerinthe in France in 1793. Leonardo da Vinci made detailed sketches of parachutes in 1485. He also sketched studies for a helicopter, a tank and retractable landing gear. The first helicopter that could carry a person was flown by Paul Cornu in 1907. Tanks were first used during World War One in Cambrai, France in 1917. The first airplane with retractable landing gear was built in 1933. Da Vinci also suggested underwater breathing methods. Jacques-Yves Cousteau and Emile Gagnon introduced scuba diving only in 1943, 458 years later.
Although Alexander Fleming discovered penicillin in 1928, it was only in 1938 that Howard Florey and Ernst Chain found a way to produce it, demonstrating it only in 1942.
Adolph Fick first suggested contact lenses in 1888, and although two companies manufactured lenses out of glass, it wasn't until 1948 when Kevin Tuohy invented the soft plastic lens.
Bar codes were invented by Bernard Silver and Norman Woodland in 1948. Their system used light to read a set of concentric circles, but they had to wait two decades before the advent of computers and lasers made their system practical. (However, the bar code system in use today is the Universal Product Code, introduced by IBM in 1973. The first bar coded item sold was a pack of gum in 1974.)
Modern technology... well, somewhat...
Heron of Greece suggested the used of steam power in 50 BC. But the leaders of the day thought that it would cause unemployment which may lead to unrest and the invention ran out of steam. Steam technology known to the Chinese by 800 BC. Plato, in his Hero of Alexandria of 150 BC, mentioned some 70 steam inventions. But the steam engine reappeared again only in 1698 when Thomas Savery invented a steam pump. The first practical steam engine was the atmospheric machine of Thomas Newcomen in 1701. It was used to operate pumps on coal mines. In 1769, Nicolas Joseph Cugnot drove his steam tractor, officially the first known motorcar, down a street in Paris. In 1804, English inventor Richard Trevithick introduced the steam locomotive in Wales. In 1815, George Stephenson built the world's first workable steam locomotive.
The computer was launched in 1943, more than 100 years after Charles Babbage designed the first programmable device. Babbage dropped his idea after he couldn't raise capital for it. In 1998, the Science Museum in London, UK, built a working replica of the Babbage machine, using the materials and work methods available at Babbage's time. It worked just as Babbage had intended.
Thomas Edison invented the phonograph in 1877. Peter Carl Goldmark invented the LP record in 1948. The Compact Disc was invented by Joop Sinjou and Toshi Tada Doi in 1979. It took the CD fifteen years to replace the LP.
The first true aircraft carrier, HMS Furious, was converted from a battlecruiser into a flush-deck aircraft carrier in 1917, and it was the prototype of all flat-tops. The first aircraft carriers designed from scratch were HMS Hermes and IJN Hosho, which both were launched in 1920. HMS Furious is the only aircraft carrier which did combat operations in both World Wars. She was scrapped in 1948.
Douglas Engelbart experimented in the 1960's with light pens and steering wheels before deciding on a mouse for computer use.
The first fax process was patented in 1843 by Alexander Bain, but fax machines went into service only in 1964. In 1888, Frank Sprague completed an electric railway, but electric locomotives were introduced only in 1895. Eugene Ely landed a plane on a boat in 1911, but aircraft carriers weren't perfected for another 20 years.
The first parachute jump was made from a hot air balloon by Andre-Jacques Garnerinthe in France in 1793. Leonardo da Vinci made detailed sketches of parachutes in 1485. He also sketched studies for a helicopter, a tank and retractable landing gear. The first helicopter that could carry a person was flown by Paul Cornu in 1907. Tanks were first used during World War One in Cambrai, France in 1917. The first airplane with retractable landing gear was built in 1933. Da Vinci also suggested underwater breathing methods. Jacques-Yves Cousteau and Emile Gagnon introduced scuba diving only in 1943, 458 years later.
Although Alexander Fleming discovered penicillin in 1928, it was only in 1938 that Howard Florey and Ernst Chain found a way to produce it, demonstrating it only in 1942.
Adolph Fick first suggested contact lenses in 1888, and although two companies manufactured lenses out of glass, it wasn't until 1948 when Kevin Tuohy invented the soft plastic lens.
Bar codes were invented by Bernard Silver and Norman Woodland in 1948. Their system used light to read a set of concentric circles, but they had to wait two decades before the advent of computers and lasers made their system practical. (However, the bar code system in use today is the Universal Product Code, introduced by IBM in 1973. The first bar coded item sold was a pack of gum in 1974.)
Modern technology... well, somewhat...
Heron of Greece suggested the used of steam power in 50 BC. But the leaders of the day thought that it would cause unemployment which may lead to unrest and the invention ran out of steam. Steam technology known to the Chinese by 800 BC. Plato, in his Hero of Alexandria of 150 BC, mentioned some 70 steam inventions. But the steam engine reappeared again only in 1698 when Thomas Savery invented a steam pump. The first practical steam engine was the atmospheric machine of Thomas Newcomen in 1701. It was used to operate pumps on coal mines. In 1769, Nicolas Joseph Cugnot drove his steam tractor, officially the first known motorcar, down a street in Paris. In 1804, English inventor Richard Trevithick introduced the steam locomotive in Wales. In 1815, George Stephenson built the world's first workable steam locomotive.
The computer was launched in 1943, more than 100 years after Charles Babbage designed the first programmable device. Babbage dropped his idea after he couldn't raise capital for it. In 1998, the Science Museum in London, UK, built a working replica of the Babbage machine, using the materials and work methods available at Babbage's time. It worked just as Babbage had intended.
Thomas Edison invented the phonograph in 1877. Peter Carl Goldmark invented the LP record in 1948. The Compact Disc was invented by Joop Sinjou and Toshi Tada Doi in 1979. It took the CD fifteen years to replace the LP.
The first true aircraft carrier, HMS Furious, was converted from a battlecruiser into a flush-deck aircraft carrier in 1917, and it was the prototype of all flat-tops. The first aircraft carriers designed from scratch were HMS Hermes and IJN Hosho, which both were launched in 1920. HMS Furious is the only aircraft carrier which did combat operations in both World Wars. She was scrapped in 1948.
Douglas Engelbart experimented in the 1960's with light pens and steering wheels before deciding on a mouse for computer use.
First submarine designed in 1578
Leonardo da Vinci (1452-1519) made sketches of a submarine and William Bourne, a British mathematician, drew plans for a submarine in 1578. But it was only in 1620 that Cornelius van Drebbel, a Dutch inventor, managed to build a submarine. He wrapped a wooden rowboat tightly in waterproofed leather and had air tubes with floats to the surface to provide oxygen. Of course, there were no engines yet, so the oars went through the hull at leather gaskets. He took the first trip with 12 oarsmen in the Thames River - staying submerged for 3 hours.
The first submarine used for military purposes was built in 1776 by David Bushnell (1742-1824) of the US. His "Turtle" was a one-man, wooden submarine powered by hand-turned propellers. It was used during the American Revolution against British warships. The Turtle would approach enemy ships partially submerged to attach explosives to the ships's hull. The Turtle worked well but the explosives did not.
Two rival inventors from the US developed the first true submarines in the 1890s. The US Navy purchased submarines built by John P Holland, while Russia and Japan opted for the designs of Simon Lake. Their submarines used petrol or steam engines for surface cruising and electric motors for underwater travel. They also invented torpedoes which were propelled by small electric motors, thereby introducing one of the most dangerous weapons in the world.
Submarines are also called U-boats, which is short for Unterseeboot, the German word for undersea boat.
The first nuclear-powered submarine, the USS Nautilus, was launched in 1955. In 1958 the Nautilus made the first voyage under the polar ice pack, completing the 2945 km (1,830 miles) journey in 6 days.
The first submerged circumnavigation of earth was made in 1960 by the nuclear submarine USS Triton.
The first submarine used for military purposes was built in 1776 by David Bushnell (1742-1824) of the US. His "Turtle" was a one-man, wooden submarine powered by hand-turned propellers. It was used during the American Revolution against British warships. The Turtle would approach enemy ships partially submerged to attach explosives to the ships's hull. The Turtle worked well but the explosives did not.
Two rival inventors from the US developed the first true submarines in the 1890s. The US Navy purchased submarines built by John P Holland, while Russia and Japan opted for the designs of Simon Lake. Their submarines used petrol or steam engines for surface cruising and electric motors for underwater travel. They also invented torpedoes which were propelled by small electric motors, thereby introducing one of the most dangerous weapons in the world.
Submarines are also called U-boats, which is short for Unterseeboot, the German word for undersea boat.
The first nuclear-powered submarine, the USS Nautilus, was launched in 1955. In 1958 the Nautilus made the first voyage under the polar ice pack, completing the 2945 km (1,830 miles) journey in 6 days.
The first submerged circumnavigation of earth was made in 1960 by the nuclear submarine USS Triton.
Who owns the moon?
The only place in the universe where a flag flies all day, never goes up or comes down, never flies half-mast and does not get saluted, is the moon.
It is, of course, the American flag, the only country to have landed people on the moon even though British Interplanetary Society engineers had in 1939 designed a ship to carry people to the moon. Since Apollo 11 landed on moon on 20th July 1969 untill 1972, 12 American astronauts walked on the moon, spending 170 hours roaming over 60 miles (100 km), planting 6 flags in total. They brought home 880 pounds (400 kilograms) of soil and rock, and 30,000 photographs.
The 6 American flags on the moon were planted during the missions of Apollo 11,12,14,15,16,and 17. The flags of the European Union, Russia, and India are also on the moon but they are displayed on equipment or probes.
The first landing of the moon is celebrated in the festival of Evoloterra on 20th July.
Last man on the moon
The Apollo 17 crew were the last men on the moon. With Ronald Evans in the command module, Commander Eugene Cernan and scientist Harrison H. Schmitt drove 34 km (21 miles) in the lunar buggy. On December 11, 1972 they left behind a plaque that reads: "Here Man completed his first exploration of the Moon, December 1972 A.D. May the spirit of peace in which we came be reflected in the lives of all mankind." Cernan was the last man to have set foot on another celestial body.
Last words spoken on the moon
The first words spoken on the moon, by Neil Armstrong, are well known, but what were the last words spoken from the moon?
"America's challenge of today has forged man's destiny of tomorrow." - Commander Eugene Cernan, Apollo 17 Mission, 11 December 1972.
Just in case you forgot Neil Armstrong's words: "One small step for man. One giant leap for mankind." On returning to Earth, he explained that he thought he had said "one small step for a man."
Who owns the moon?
Planting a flag on the moon does not mean owning it or any part of it. The United Nations Outer Space Treaty (long name: Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, Including the Moon and Other Celestial Bodies) of January 27, 1967 states that "outer space, including the moon and other celestial bodies, is not subject to national appropriation by claim of sovereignty, by means of occupation, or by any other means."
It is, of course, the American flag, the only country to have landed people on the moon even though British Interplanetary Society engineers had in 1939 designed a ship to carry people to the moon. Since Apollo 11 landed on moon on 20th July 1969 untill 1972, 12 American astronauts walked on the moon, spending 170 hours roaming over 60 miles (100 km), planting 6 flags in total. They brought home 880 pounds (400 kilograms) of soil and rock, and 30,000 photographs.
The 6 American flags on the moon were planted during the missions of Apollo 11,12,14,15,16,and 17. The flags of the European Union, Russia, and India are also on the moon but they are displayed on equipment or probes.
The first landing of the moon is celebrated in the festival of Evoloterra on 20th July.
Last man on the moon
The Apollo 17 crew were the last men on the moon. With Ronald Evans in the command module, Commander Eugene Cernan and scientist Harrison H. Schmitt drove 34 km (21 miles) in the lunar buggy. On December 11, 1972 they left behind a plaque that reads: "Here Man completed his first exploration of the Moon, December 1972 A.D. May the spirit of peace in which we came be reflected in the lives of all mankind." Cernan was the last man to have set foot on another celestial body.
Last words spoken on the moon
The first words spoken on the moon, by Neil Armstrong, are well known, but what were the last words spoken from the moon?
"America's challenge of today has forged man's destiny of tomorrow." - Commander Eugene Cernan, Apollo 17 Mission, 11 December 1972.
Just in case you forgot Neil Armstrong's words: "One small step for man. One giant leap for mankind." On returning to Earth, he explained that he thought he had said "one small step for a man."
Who owns the moon?
Planting a flag on the moon does not mean owning it or any part of it. The United Nations Outer Space Treaty (long name: Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, Including the Moon and Other Celestial Bodies) of January 27, 1967 states that "outer space, including the moon and other celestial bodies, is not subject to national appropriation by claim of sovereignty, by means of occupation, or by any other means."
An espresso has less caffeine than a cup of coffee
A cup of drip brewed coffee has about 115 milligrams of caffeine, an espresso (and percolated coffee) about 80mg, while instant coffee has about 65mg of caffeine. Decaffeinated coffee is not totally caffeine free, containing about 3mg of caffeine. A 8oz can of Coca-Cola has about 23mg of caffeine, Pepsi Cola 25mg, Mountain Dew 36mg, and TAB 31mg. Tea has about 40mg of caffeine, while an ounce of chocolate contains about 20mg.
The first Espresso machine was introduced in 1822 by the French, but it was the Italians who perfected and distributed it.
Coffee business
Coffee is the world's most popular stimulant: 4 out of 5 Americans drink it, consuming more than 400 million cups a day. Consumption in Scandinavian countries is more than 12kg (26lb) per capita. With more than 25 million people employed in the industry, coffee is one of the largest trade industries in the world.
Although coffee is believed to have been grown near the Red Sea since the 7th century, an Arabian author of the 15th century, Shehabeddin Ben, wrote that Ethiopians enjoyed coffee ever since anyone could remember. By the 16th centuries, coffee plants were found throughout the Yemen region of Arabia. After a Turkish ambassador introduced it to the court of Louis XIV in 1669, Europeans quickly acquired a taste for it. A few years later, the Dutch introduced coffee into Java. In 1714, the Frenchman Desclieux planted a single cutting of a coffee tree on the island of Martinique. Plantations soon grew from French Guiana to Brazil and Central America. Today, coffee is planted in moist regions around the world.
Instant coffee was invented in 1906 by Mr. G. Washington, an Englishman living in Guatemala.
Genus Coffea
Coffee beans on tree
Red coffee beans ready for picking
Coffee is the seed of a cherry from the tree genus Coffea, a tree yielding about 1kg (2lb) of coffee per year. There are more than 25 species of coffee, the 3 main commercial types being Robusta, Liberia and Arabica, the latter representing 70% of total production. It takes 42 coffee beans to make an espresso.
Caffeine increases the power of aspirin and other painkillers, that is why it is found in some medicines. Ironically, caffeine withdrawal also is one of the most common causes of headaches. Women who drink 2 or more cups of coffee a day also have an increased risk of developing osteoporosis. This, however, can be offset by drinking milk or yoghurt to replace the lost calcium. Most studies have found that high caffeine consumption impairs fertility, and taken during pregnancy may cause premature or defected birth.
Caffeine is removed from coffee by treating the green beans - large seeds are commonly referred to as beans - with chlorinated hydrocarbon solvents. Instant coffee is prepared by mixing ground and roasted coffee with hot water. The water is then evaporated by spray dryers and high pressure, leaving only the coffee powder. In some coffee products, coffee is replaced with chicory (a wildflower herb), fig, date, malt, or barley, remotely resembling real coffee.
Caffeine is known medically as trimethylxanthine, and the chemical formula is C8H10N4O2.
Cappuccino
The word "cappuccino" comes from the 16th century Capuchin order of friars, whose hoods were called cappuccinos. A cappuccino is a coffee topped with steamed milk.
Barista
A barista is an expert in the preparation of espresso-based coffee drinks. Top Baristas compete annualy in the World Barista Championship.
The small cup in which an espresso (sometimes referred to as expresso) is served is called a demitasse.
TIP
The word "tip" is also related to coffee. It comes from old London coffeehouses where the waiters' brass boxes were etched with the inscription, "To Insure Promptness." In fact, it was in one such coffeehouses which belonged to a Mr Lloyd that a few cargo insurers got together to start the Lloyd's insurance company.
The first Espresso machine was introduced in 1822 by the French, but it was the Italians who perfected and distributed it.
Coffee business
Coffee is the world's most popular stimulant: 4 out of 5 Americans drink it, consuming more than 400 million cups a day. Consumption in Scandinavian countries is more than 12kg (26lb) per capita. With more than 25 million people employed in the industry, coffee is one of the largest trade industries in the world.
Although coffee is believed to have been grown near the Red Sea since the 7th century, an Arabian author of the 15th century, Shehabeddin Ben, wrote that Ethiopians enjoyed coffee ever since anyone could remember. By the 16th centuries, coffee plants were found throughout the Yemen region of Arabia. After a Turkish ambassador introduced it to the court of Louis XIV in 1669, Europeans quickly acquired a taste for it. A few years later, the Dutch introduced coffee into Java. In 1714, the Frenchman Desclieux planted a single cutting of a coffee tree on the island of Martinique. Plantations soon grew from French Guiana to Brazil and Central America. Today, coffee is planted in moist regions around the world.
Instant coffee was invented in 1906 by Mr. G. Washington, an Englishman living in Guatemala.
Genus Coffea
Coffee beans on tree
Red coffee beans ready for picking
Coffee is the seed of a cherry from the tree genus Coffea, a tree yielding about 1kg (2lb) of coffee per year. There are more than 25 species of coffee, the 3 main commercial types being Robusta, Liberia and Arabica, the latter representing 70% of total production. It takes 42 coffee beans to make an espresso.
Caffeine increases the power of aspirin and other painkillers, that is why it is found in some medicines. Ironically, caffeine withdrawal also is one of the most common causes of headaches. Women who drink 2 or more cups of coffee a day also have an increased risk of developing osteoporosis. This, however, can be offset by drinking milk or yoghurt to replace the lost calcium. Most studies have found that high caffeine consumption impairs fertility, and taken during pregnancy may cause premature or defected birth.
Caffeine is removed from coffee by treating the green beans - large seeds are commonly referred to as beans - with chlorinated hydrocarbon solvents. Instant coffee is prepared by mixing ground and roasted coffee with hot water. The water is then evaporated by spray dryers and high pressure, leaving only the coffee powder. In some coffee products, coffee is replaced with chicory (a wildflower herb), fig, date, malt, or barley, remotely resembling real coffee.
Caffeine is known medically as trimethylxanthine, and the chemical formula is C8H10N4O2.
Cappuccino
The word "cappuccino" comes from the 16th century Capuchin order of friars, whose hoods were called cappuccinos. A cappuccino is a coffee topped with steamed milk.
Barista
A barista is an expert in the preparation of espresso-based coffee drinks. Top Baristas compete annualy in the World Barista Championship.
The small cup in which an espresso (sometimes referred to as expresso) is served is called a demitasse.
TIP
The word "tip" is also related to coffee. It comes from old London coffeehouses where the waiters' brass boxes were etched with the inscription, "To Insure Promptness." In fact, it was in one such coffeehouses which belonged to a Mr Lloyd that a few cargo insurers got together to start the Lloyd's insurance company.
Predictions that missed the mark
In 1894, the president of the Royal Society, William Thomson, Lord Kelvin, predicted that radio had no future. The first radio factory was opened five years later. Today, there are more than one billion radio sets in the world, tuned to more than 33 000 radio stations around the world. He also predicted that heavier-than-air flying machines were impossible. The Wright Brother's first flight covered a distance equal to only half the length of the wingspan of a Boeing 747. He also said, "X-rays will prove to be a hoax."
In the 6th century BC Greek mathematician Pythagoras said that earth is round - but few agreed with him. Greek astronomer Aristarchos said in the 3rd century BC that earth revolves around the sun - but the idea was not accepted. In the 2nd century BC Greek astronomer Erastosthenes accurately measured the distance around the earth at about 40,000 km (24,860 miles) - but nobody believed him. In the 2nd century AD Greek astronomer Ptolemy stated that earth was the centre of the universe - most people believed him for the next 1,400 years.
In the early 20th century a world market for only 4 million automobiles was predicted because "the world would run out of chauffeurs." Shortly after the end of World War II (1945), the whole of Volkswagen, factory and patents, was offered free to Henry Ford II. He dismissed the Volkswagen Beetle as a bad design. Today, more than 70 million motorcars are produced every year. The Beetle became one of the best-selling vehicles of all time.
The telephone was not widely appreciated for the first 15 years because people did not see a use for it. In fact, in the British parliament it was mentioned there was no need for telephones because "we have enough messengers here." Western Union believed that it could never replace the telegraph. In 1876, an internal memo read: "This telephone has too many shortcomings to be seriously considered as a means of communication." Even Mark Twain, upon being invited by Alexander Graham Bell to invest $5 000 in the new invention, could not see a future in the telephone.
Irish scientist, Dr. Dionysius Lardner (1793 - 1859) didn't believe that trains could contribute much in speedy transport. He wrote: "Rail travel at high speed is not possible, because passengers ' would die of asphyxia' [suffocation]." Today, trains reach speeds of 500 km/h.
In 1927, H.M. Warner, Warner Brothers, asked, "Who the hell wants to hear actors talk?" In 1936, Radio Times editor Rex Lambert thought "Television won't matter in your lifetime or mine."
In 1943, Thomas Watson, the chairman of IBM forecast a world market for "maybe only five computers." Years before IBM launched the personal computer in 1981, Xerox had already successfully designed and used PCs internally... but decided to concentrate on the production of photocopiers. Even Ken Olson, founder of Digital Equipment Corporation, said in 1977, "There is no reason anyone would want a computer in their home."
After the invention of the transistor in 1947, several US electronics companies rejected the idea of a portable radio. Apparently it was thought nobody would want to carry a radio around. When Bell put the transistor on the market in 1952 they had few takers apart from a small japanese start-up called Sony. They introduced the transistor radio in 1954.
In 1894, A.A. Michelson, who with E.W. Morley seven years earlier experimentally demonstrated the constancy of the speed of light, said that the future of science would consist of "adding a few decimal places to the results already obtained."
In 1954, a concert manager fired Elvis Presley, saying, "You ought to go back to driving a truck." In 1962, Decca Records rejected the Beatles, "We don't like their sound, and guitar music is on the way out."
In 1966, Time Magazine predicted, "By 2000, the machines will be producing so much that everyone in the U.S. will, in effect, be independently wealthy." In that year too CoCo Chanel said about miniskirts: "It's a bad joke that won't last. Not with winter coming."
Sometimes a few decimal places make a massive difference. Investment banks rely on computer models to direct trading activity; in August 2007, Goldman Sachs’ hedge funds and other quant funds were left exposed by a series of market swings, each of which their software predicted would occur only once every 100,000 years. Goldman Sachs required a $3 billion (€1.9 billion) bailout, with other banks joining the hand-out queue.
Perhaps the guy who got it wrong most was the commissioner of the US Office of Patents: in 1899, Charles H. Duell, assured President McKinley that "everything that can be invented has been invented."
To prophesy is extremely difficult - especially with regard to the future. - Chinese proverb
In the 6th century BC Greek mathematician Pythagoras said that earth is round - but few agreed with him. Greek astronomer Aristarchos said in the 3rd century BC that earth revolves around the sun - but the idea was not accepted. In the 2nd century BC Greek astronomer Erastosthenes accurately measured the distance around the earth at about 40,000 km (24,860 miles) - but nobody believed him. In the 2nd century AD Greek astronomer Ptolemy stated that earth was the centre of the universe - most people believed him for the next 1,400 years.
In the early 20th century a world market for only 4 million automobiles was predicted because "the world would run out of chauffeurs." Shortly after the end of World War II (1945), the whole of Volkswagen, factory and patents, was offered free to Henry Ford II. He dismissed the Volkswagen Beetle as a bad design. Today, more than 70 million motorcars are produced every year. The Beetle became one of the best-selling vehicles of all time.
The telephone was not widely appreciated for the first 15 years because people did not see a use for it. In fact, in the British parliament it was mentioned there was no need for telephones because "we have enough messengers here." Western Union believed that it could never replace the telegraph. In 1876, an internal memo read: "This telephone has too many shortcomings to be seriously considered as a means of communication." Even Mark Twain, upon being invited by Alexander Graham Bell to invest $5 000 in the new invention, could not see a future in the telephone.
Irish scientist, Dr. Dionysius Lardner (1793 - 1859) didn't believe that trains could contribute much in speedy transport. He wrote: "Rail travel at high speed is not possible, because passengers ' would die of asphyxia' [suffocation]." Today, trains reach speeds of 500 km/h.
In 1927, H.M. Warner, Warner Brothers, asked, "Who the hell wants to hear actors talk?" In 1936, Radio Times editor Rex Lambert thought "Television won't matter in your lifetime or mine."
In 1943, Thomas Watson, the chairman of IBM forecast a world market for "maybe only five computers." Years before IBM launched the personal computer in 1981, Xerox had already successfully designed and used PCs internally... but decided to concentrate on the production of photocopiers. Even Ken Olson, founder of Digital Equipment Corporation, said in 1977, "There is no reason anyone would want a computer in their home."
After the invention of the transistor in 1947, several US electronics companies rejected the idea of a portable radio. Apparently it was thought nobody would want to carry a radio around. When Bell put the transistor on the market in 1952 they had few takers apart from a small japanese start-up called Sony. They introduced the transistor radio in 1954.
In 1894, A.A. Michelson, who with E.W. Morley seven years earlier experimentally demonstrated the constancy of the speed of light, said that the future of science would consist of "adding a few decimal places to the results already obtained."
In 1954, a concert manager fired Elvis Presley, saying, "You ought to go back to driving a truck." In 1962, Decca Records rejected the Beatles, "We don't like their sound, and guitar music is on the way out."
In 1966, Time Magazine predicted, "By 2000, the machines will be producing so much that everyone in the U.S. will, in effect, be independently wealthy." In that year too CoCo Chanel said about miniskirts: "It's a bad joke that won't last. Not with winter coming."
Sometimes a few decimal places make a massive difference. Investment banks rely on computer models to direct trading activity; in August 2007, Goldman Sachs’ hedge funds and other quant funds were left exposed by a series of market swings, each of which their software predicted would occur only once every 100,000 years. Goldman Sachs required a $3 billion (€1.9 billion) bailout, with other banks joining the hand-out queue.
Perhaps the guy who got it wrong most was the commissioner of the US Office of Patents: in 1899, Charles H. Duell, assured President McKinley that "everything that can be invented has been invented."
To prophesy is extremely difficult - especially with regard to the future. - Chinese proverb
So, who invented the paperclip?
When Johann Vaaler patented his paper clip in 1901, therealready were similar designs on the books. William Middlebrook of Waterbury, Connecticut patented his design in 1899. Cornelius Brosnan of Springfield, Massachusetts patented his Konaclip in 1900.
The paper clipSo, who was first? Well, it is thought to be Johann Vaaler. Drawings of his design date to early 1899, but since Norway had no patent law at the time, he had to seek patent rights in Germany and the US in the following years.
Johann Vaaler was born on 15 March 1866 in Aurskog, Norway. Known as an innovator in his youth, he graduated in electronics, science and mathematics. He was employed by the owner of a invention office when he invented the paperclip in 1899.
Several designs followed the original. Only a few remain, such as the Ideal, Non-Skid, Owl and Gem.
The first double-oval clip, the Gem, was launched in early-1900 by Gem Manufacturing Ltd of England.
Tickling
Tickling is the act of touching a part of the body, so as to cause involuntary twitching movements or laughter. Such sensations can be pleasurable or exciting, but are sometimes considered highly unpleasant, particularly in the case of relentless heavy tickling.
Etymology
The word "tickle" (helpinfo) evolved from the Middle English tikelen, perhaps frequentative of ticken, to touch lightly. The idiom tickled pink means to be pleased or delighted.
Physiology
In 1897 psychologists G. Stanley Hall and Arthur Allin described a "tickle" as two different types of phenomena. The first is a sensation caused by very light movement across the skin. This type of tickle, called knismesis, generally does not produce laughter and is sometimes accompanied by an itching sensation. The second type of tickle is the laughter inducing, "heavy" tickle, produced by repeatedly applying pressure to "ticklish" areas, and is known as gargalesis.
The feather-type of tickle is often elicited by crawling animals and insects, such as spiders, mosquitoes, scorpion or beetles, which may be why it has evolved in many animals. Gargalesis reactions, on the other hand, are thought to be limited to humans and other primates, however some research has indicated that rats can be tickled as well.
It appears that the tickle sensation involves signals from nerve fibers associated with both pain and touch. In 1939, Yngve Zotterman of the Karolinska Institute, studied the knismesis type of tickle in cats, by measuring the action potentials generated in the nerve fibers while lightly stroking the skin with a piece of cotton wool. Zotterman found that the "tickling" sensation depended, in part, on the nerves that generate pain. Further studies have discovered that when the pain nerves are severed by surgeons, in an effort to reduce intractable pain, the tickle response is also diminished. However, in some patients that have lost pain sensation due to spinal cord injury, some aspects of the tickle response do remain. Tickle may also depend on nerve fibers associated with the sense of touch. When circulation is severed in a limb, the response to touch and tickle are lost prior to the loss of pain sensation.
It might be tempting to speculate that areas of the skin that are the most sensitive to touch would also be the most ticklish, but this does not seem to be the case. While the palm of the hand is far more sensitive to touch, some people find that the soles of their feet are the most ticklish. Other commonly ticklish areas include the armpits, sides of the torso, neck, and midriff.
Some evidence suggests that laughing associated with tickling is a nervous reaction that can be triggered; indeed, very ticklish people often start laughing before actually being tickled.
Social aspects
Charles Darwin theorized on the link between tickling and social relations, arguing that tickling provokes laughter through the anticipation of pleasure. If a stranger tickles a child without any preliminaries, catching the child by surprise, the likely result will be not laughter but withdrawal and displeasure. Darwin also noticed that for tickling to be effective, you must not know the precise point of stimulation in advance, and reasoned that this is why you cannot effectively tickle yourself.
Tickling is defined by many child psychologists as an integral bonding activity between parents and children. In the parent-child concept, tickling establishes at an early age the pleasure associated with being touched by a parent with a trust-bond developed so that parents may touch a child, in an unpleasant way, should circumstances develop such as the need to treat a painful injury or prevent harm from danger. This tickling relationship continues throughout childhood and often into the early to mid teenage years.
Another tickling social relationship is that which forms between siblings of relatively the same age. Many case studies have indicated that siblings often use tickling as an alternative to outright violence when attempting to either punish or intimidate a sibling. The sibling tickling relationship can occasionally develop into an anti-social situation, or “tickle-torture”, where one sibling will tickle the other, without mercy. The motivation behind tickle-torture is often to portray the sense of domination the tickler has over the "ticklee".
As with parents and siblings, tickling serves as a bonding mechanism between friends, and is classified by psychologists as part of the fifth and highest grade of social play which involves special intimacy or “cognitive interaction”. This suggests that tickling works best when all the parties involved feel comfortable with the situation and one another. During adolescence, tickling often serves as an outlet for sexual energy between individuals, with erotic games, foreplay and sex becoming the motivation of the tickler. The body openings and erogenous zones are extremely ticklish; however, the tickling of these areas is generally not associated with laughter or withdrawal.
Tickling is perhaps one of the most common human behaviors known. While many people assume that other people enjoy tickling, a recent survey of 84 college students indicated that only 32% of respondents enjoyed being tickled (32% and 36% of respondents, respectively, either gave neutral responses, or stated that they did not enjoy being tickled). In the same study the authors found that those people who indicated that they did not enjoy being tickled actually smiled more often during tickling than those who did enjoy being tickled, which confirms that the usual association between smiling and pleasure is broken in the context of unpleasant tickling.
Excessive tickling has been described as a primary sexual obsession and, under these circumstances, is sometimes considered a form of paraphilia. Tickling can also be a form of, or simply be mistaken for, sexual harassment.
Why do we tickle?
Many of history's greatest thinkers have pondered the mysteries of the tickle response, including Plato, Francis Bacon, Galileo and Charles Darwin. Many scientists have followed in their footsteps and have ventured opinions and theories that attempt to explain the nearly ubiquitous nature of the tickle response.
One theory, as mentioned above, is that tickling serves as a pleasant bonding experience between parent and child. However, this theory does not adequately explain why many children and adults find tickling to be an unpleasant experience. Another view maintained is that tickling develops as a prenatal response and that the development of sensitive areas on the fetus helps to orient the fetus into favourable positions while in the womb.
It is unknown why certain people find areas of the body to be more ticklish than others; additionally, studies have shown that there is no significant difference in ticklishness between the genders. In 1924 J.C. Gregory proposed that the most ticklish places on the body were also those areas that were the most vulnerable during hand-to-hand combat. He posited that ticklishness might confer an evolutionary advantage by enticing the individual to protect these areas. Consistent with this idea, University of Iowa psychiatrist, Donald W. Black observed that most ticklish spots are found in the same places as the protective reflexes.
A third, hybrid theory, has suggested that tickling encourages the development of combat skills. Most tickling is done by parents, siblings and friends and is often a type of rough-and-tumble play, during which time children often develop valuable defensive and combat moves. Although people generally make movements to get away from, and report disliking, being tickled, laughter encourages the tickler to continue. If the facial expressions induced by tickle were less pleasant the tickler would be less likely to continue, thus diminishing the frequency of these valuable combat lessons.
To understand how much of the tickle response is dependent on the interpersonal relationship of the parties involved, Christenfeld and Harris presented subjects with a "mechanical tickle machine". They found that the subjects laughed just as much when they believed they were being tickled by a machine as when they thought they were being tickled by a person.[19] Harris goes on to suggest that the tickle response is reflex, similar to the startle reflex, that is contingent on the element of surprise.
Self-tickle
Knismesis may in fact represent a vestige of the primitive grooming response, in effect; knismesis serves as a “non-self detector” and protects the subject against foreign objects. Perhaps due to the importance of knismesis in protection, this type of tickle is not dependent on the element of surprise and it is possible for one to induce self-knismesis, by light touching.
Gargalesis, on the other hand, produces an odd phenomenon, when a person touches “ticklish” body parts on their own bodies, most people measure no tickling sensation. It is thought that the tickling requires a certain amount of surprise, and because tickling one’s self produces no unexpected motion on the skin, the response is not activated. A recent analysis of the “self-tickle” response has been addressed using MRI technology. Blakemore and colleagues have investigated how the brain distinguishes between sensations we create for ourselves and sensations others create for us. When the subjects used a joystick to control a "tickling robot", they could not make themselves laugh. This suggested that when a person tries to tickle him- or herself, the cerebellum sends to the somatosensory cortex precise information on the position of the tickling target and therefore what sensation to expect. Apparently an unknown cortical mechanism then decreases or inhibits the tickling sensation. A small percentage of people however, have found it possible to tickle themselves.
In popular culture
* Trout tickling is mentioned in Shakespeare's Twelfth Night, the servant Maria refers to the approach of the hated Malvolio, head of Olivia's household, with the words "for here comes the trout that must be caught with tickling". Trout tickling is also mentioned as a poaching method in Roald Dahl's classic novel Danny the Champion of the World.
* In some science fiction literature, devices known as tickling boots are depicted as punishment-torture devices employed by some technological societies. The British science fiction show The Tomorrow People featured tickling boots in the episode A Man for Emily. Tickling boots also appeared in several short story-plays on the Nickelodeon program Kids Writes.
* In the 1960's era comic book there is one instance of a weather control tower producing "Tickle Rain". People hid under transparent plastic domes that had handles on the inside, so that the first people who managed to get under the domes could hold the domes down from the inside and then watch the "unfortunate" others being tickled to helpless hysterics by the rain drops.
* In H.P. Lovecraft's short novel The Dream Quest of Unknown Kadath the author describes nightgaunts — ebony-skinned, faceless, flying creatures that guard forbidden places from trespassers. When disturbed, the nightgaunts carry their victims away to unpleasant fates, tickling the poor captives into submission on the way. The more the captive struggles, the more he is tickled. The nightgaunts make no noise in the performing of their mindless duties, nor do they inflict harm by any other means; later, the captive is typically dropped into a death trap and left to fend for himself.
* In the VeggieTales episode Esther... The Girl Who Became Queen, which is based on the stories of the Biblical Book of Esther, instead of being executed by hanging- as described in the biblical book- offenders were instead exiled to 'The Island of Perpetual Tickling'. Watering down the graphic details of a story in this way is known as Bowdlerization.
* In the popular 1987 cartoon Teenage Mutant Ninja Turtles, a minor villain named Don Turtelli, would frequently use tickling as a form of interrogation. When capturing a hostage, his normal procedure would be to tie the victim to a chair, bare feet propped up, and tickle the soles of their feet with a feather until the hostage told him what he wanted to know.
* A Star Trek audio story for children, entitled "To Starve a Fleaver", released in the 1970s and written by Alan Dean Foster, told the tale of the Starship Enterprise becoming infested with tiny parasites called meegees, which instead of drinking blood, feed on mirth expressed by their hosts. When a host isn't happy, the meegees move around and tickle their hosts to get them to laugh. The crew of the Enterprise, in hysterics, struggle to find a way to get rid of the meegees, and discover that thinking unhappy thoughts starves them to death.
* In the SpongeBob SquarePants episode Mermaid Man and Barnacle Boy III, the villain Man Ray is kept from performing evil acts by a tickle belt, a device belonging to Mermaid Man which, when activated, tickles the wearer into submission.
Etymology
The word "tickle" (helpinfo) evolved from the Middle English tikelen, perhaps frequentative of ticken, to touch lightly. The idiom tickled pink means to be pleased or delighted.
Physiology
In 1897 psychologists G. Stanley Hall and Arthur Allin described a "tickle" as two different types of phenomena. The first is a sensation caused by very light movement across the skin. This type of tickle, called knismesis, generally does not produce laughter and is sometimes accompanied by an itching sensation. The second type of tickle is the laughter inducing, "heavy" tickle, produced by repeatedly applying pressure to "ticklish" areas, and is known as gargalesis.
The feather-type of tickle is often elicited by crawling animals and insects, such as spiders, mosquitoes, scorpion or beetles, which may be why it has evolved in many animals. Gargalesis reactions, on the other hand, are thought to be limited to humans and other primates, however some research has indicated that rats can be tickled as well.
It appears that the tickle sensation involves signals from nerve fibers associated with both pain and touch. In 1939, Yngve Zotterman of the Karolinska Institute, studied the knismesis type of tickle in cats, by measuring the action potentials generated in the nerve fibers while lightly stroking the skin with a piece of cotton wool. Zotterman found that the "tickling" sensation depended, in part, on the nerves that generate pain. Further studies have discovered that when the pain nerves are severed by surgeons, in an effort to reduce intractable pain, the tickle response is also diminished. However, in some patients that have lost pain sensation due to spinal cord injury, some aspects of the tickle response do remain. Tickle may also depend on nerve fibers associated with the sense of touch. When circulation is severed in a limb, the response to touch and tickle are lost prior to the loss of pain sensation.
It might be tempting to speculate that areas of the skin that are the most sensitive to touch would also be the most ticklish, but this does not seem to be the case. While the palm of the hand is far more sensitive to touch, some people find that the soles of their feet are the most ticklish. Other commonly ticklish areas include the armpits, sides of the torso, neck, and midriff.
Some evidence suggests that laughing associated with tickling is a nervous reaction that can be triggered; indeed, very ticklish people often start laughing before actually being tickled.
Social aspects
Charles Darwin theorized on the link between tickling and social relations, arguing that tickling provokes laughter through the anticipation of pleasure. If a stranger tickles a child without any preliminaries, catching the child by surprise, the likely result will be not laughter but withdrawal and displeasure. Darwin also noticed that for tickling to be effective, you must not know the precise point of stimulation in advance, and reasoned that this is why you cannot effectively tickle yourself.
Tickling is defined by many child psychologists as an integral bonding activity between parents and children. In the parent-child concept, tickling establishes at an early age the pleasure associated with being touched by a parent with a trust-bond developed so that parents may touch a child, in an unpleasant way, should circumstances develop such as the need to treat a painful injury or prevent harm from danger. This tickling relationship continues throughout childhood and often into the early to mid teenage years.
Another tickling social relationship is that which forms between siblings of relatively the same age. Many case studies have indicated that siblings often use tickling as an alternative to outright violence when attempting to either punish or intimidate a sibling. The sibling tickling relationship can occasionally develop into an anti-social situation, or “tickle-torture”, where one sibling will tickle the other, without mercy. The motivation behind tickle-torture is often to portray the sense of domination the tickler has over the "ticklee".
As with parents and siblings, tickling serves as a bonding mechanism between friends, and is classified by psychologists as part of the fifth and highest grade of social play which involves special intimacy or “cognitive interaction”. This suggests that tickling works best when all the parties involved feel comfortable with the situation and one another. During adolescence, tickling often serves as an outlet for sexual energy between individuals, with erotic games, foreplay and sex becoming the motivation of the tickler. The body openings and erogenous zones are extremely ticklish; however, the tickling of these areas is generally not associated with laughter or withdrawal.
Tickling is perhaps one of the most common human behaviors known. While many people assume that other people enjoy tickling, a recent survey of 84 college students indicated that only 32% of respondents enjoyed being tickled (32% and 36% of respondents, respectively, either gave neutral responses, or stated that they did not enjoy being tickled). In the same study the authors found that those people who indicated that they did not enjoy being tickled actually smiled more often during tickling than those who did enjoy being tickled, which confirms that the usual association between smiling and pleasure is broken in the context of unpleasant tickling.
Excessive tickling has been described as a primary sexual obsession and, under these circumstances, is sometimes considered a form of paraphilia. Tickling can also be a form of, or simply be mistaken for, sexual harassment.
Why do we tickle?
Many of history's greatest thinkers have pondered the mysteries of the tickle response, including Plato, Francis Bacon, Galileo and Charles Darwin. Many scientists have followed in their footsteps and have ventured opinions and theories that attempt to explain the nearly ubiquitous nature of the tickle response.
One theory, as mentioned above, is that tickling serves as a pleasant bonding experience between parent and child. However, this theory does not adequately explain why many children and adults find tickling to be an unpleasant experience. Another view maintained is that tickling develops as a prenatal response and that the development of sensitive areas on the fetus helps to orient the fetus into favourable positions while in the womb.
It is unknown why certain people find areas of the body to be more ticklish than others; additionally, studies have shown that there is no significant difference in ticklishness between the genders. In 1924 J.C. Gregory proposed that the most ticklish places on the body were also those areas that were the most vulnerable during hand-to-hand combat. He posited that ticklishness might confer an evolutionary advantage by enticing the individual to protect these areas. Consistent with this idea, University of Iowa psychiatrist, Donald W. Black observed that most ticklish spots are found in the same places as the protective reflexes.
A third, hybrid theory, has suggested that tickling encourages the development of combat skills. Most tickling is done by parents, siblings and friends and is often a type of rough-and-tumble play, during which time children often develop valuable defensive and combat moves. Although people generally make movements to get away from, and report disliking, being tickled, laughter encourages the tickler to continue. If the facial expressions induced by tickle were less pleasant the tickler would be less likely to continue, thus diminishing the frequency of these valuable combat lessons.
To understand how much of the tickle response is dependent on the interpersonal relationship of the parties involved, Christenfeld and Harris presented subjects with a "mechanical tickle machine". They found that the subjects laughed just as much when they believed they were being tickled by a machine as when they thought they were being tickled by a person.[19] Harris goes on to suggest that the tickle response is reflex, similar to the startle reflex, that is contingent on the element of surprise.
Self-tickle
Knismesis may in fact represent a vestige of the primitive grooming response, in effect; knismesis serves as a “non-self detector” and protects the subject against foreign objects. Perhaps due to the importance of knismesis in protection, this type of tickle is not dependent on the element of surprise and it is possible for one to induce self-knismesis, by light touching.
Gargalesis, on the other hand, produces an odd phenomenon, when a person touches “ticklish” body parts on their own bodies, most people measure no tickling sensation. It is thought that the tickling requires a certain amount of surprise, and because tickling one’s self produces no unexpected motion on the skin, the response is not activated. A recent analysis of the “self-tickle” response has been addressed using MRI technology. Blakemore and colleagues have investigated how the brain distinguishes between sensations we create for ourselves and sensations others create for us. When the subjects used a joystick to control a "tickling robot", they could not make themselves laugh. This suggested that when a person tries to tickle him- or herself, the cerebellum sends to the somatosensory cortex precise information on the position of the tickling target and therefore what sensation to expect. Apparently an unknown cortical mechanism then decreases or inhibits the tickling sensation. A small percentage of people however, have found it possible to tickle themselves.
In popular culture
* Trout tickling is mentioned in Shakespeare's Twelfth Night, the servant Maria refers to the approach of the hated Malvolio, head of Olivia's household, with the words "for here comes the trout that must be caught with tickling". Trout tickling is also mentioned as a poaching method in Roald Dahl's classic novel Danny the Champion of the World.
* In some science fiction literature, devices known as tickling boots are depicted as punishment-torture devices employed by some technological societies. The British science fiction show The Tomorrow People featured tickling boots in the episode A Man for Emily. Tickling boots also appeared in several short story-plays on the Nickelodeon program Kids Writes.
* In the 1960's era comic book there is one instance of a weather control tower producing "Tickle Rain". People hid under transparent plastic domes that had handles on the inside, so that the first people who managed to get under the domes could hold the domes down from the inside and then watch the "unfortunate" others being tickled to helpless hysterics by the rain drops.
* In H.P. Lovecraft's short novel The Dream Quest of Unknown Kadath the author describes nightgaunts — ebony-skinned, faceless, flying creatures that guard forbidden places from trespassers. When disturbed, the nightgaunts carry their victims away to unpleasant fates, tickling the poor captives into submission on the way. The more the captive struggles, the more he is tickled. The nightgaunts make no noise in the performing of their mindless duties, nor do they inflict harm by any other means; later, the captive is typically dropped into a death trap and left to fend for himself.
* In the VeggieTales episode Esther... The Girl Who Became Queen, which is based on the stories of the Biblical Book of Esther, instead of being executed by hanging- as described in the biblical book- offenders were instead exiled to 'The Island of Perpetual Tickling'. Watering down the graphic details of a story in this way is known as Bowdlerization.
* In the popular 1987 cartoon Teenage Mutant Ninja Turtles, a minor villain named Don Turtelli, would frequently use tickling as a form of interrogation. When capturing a hostage, his normal procedure would be to tie the victim to a chair, bare feet propped up, and tickle the soles of their feet with a feather until the hostage told him what he wanted to know.
* A Star Trek audio story for children, entitled "To Starve a Fleaver", released in the 1970s and written by Alan Dean Foster, told the tale of the Starship Enterprise becoming infested with tiny parasites called meegees, which instead of drinking blood, feed on mirth expressed by their hosts. When a host isn't happy, the meegees move around and tickle their hosts to get them to laugh. The crew of the Enterprise, in hysterics, struggle to find a way to get rid of the meegees, and discover that thinking unhappy thoughts starves them to death.
* In the SpongeBob SquarePants episode Mermaid Man and Barnacle Boy III, the villain Man Ray is kept from performing evil acts by a tickle belt, a device belonging to Mermaid Man which, when activated, tickles the wearer into submission.
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