Une Collection Toute Fraîche d'Anecdotes Intéressantes

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Transcript

00:00Some men wear shoes with hidden heels to look taller.

00:04These shoes can grow up to 15 cm.

00:08They look like ordinary shoes, but they contain an additional sole inside.

00:13Sometimes this sole is fixed, sometimes it is removable, and you can choose the desired height.

00:20When the Titanic hit its iceberg and sank some time later,

00:24the Atlantic Ocean was about minus 2 degrees Celsius,

00:27which means that the water was below its freezing point.

00:30No wonder so many passengers did not survive.

00:34Some birds have a row of thorns protruding from the edges of their eyelids.

00:38These thorns are probably what could be called eyelashes.

00:42However, while human eyelashes are modified hairs intended to protect the eye,

00:47the eyelashes of birds are adapted feathers.

00:49Identical twins do not actually have the same fingerprints.

00:53So you can not impute your misdeeds to any devilish twin.

00:57Various factors during the development in the uterus, such as the position inside it,

01:02the length of the umbilical cord, and the rate of growth of the fingers influence the fingerprints.

01:10The speed of rotation of the Earth changes, it slows down right now.

01:14This means that on average, the duration of the day increases by 1.8 seconds every century.

01:20600 million years ago, a day only lasted 21 hours, which ...

01:26Most of the world's maps are incorrect.

01:28On most maps, we still use the Mercator projection,

01:32mentioned for the first time in 1169.

01:35But this very inaccurate method makes Alaska look as big as Brazil.

01:40While in reality, it is 5 times smaller than the latter.

01:44As for Greenland, it seems 14 times larger than it really is.

01:48For a map to be accurate, it should be on a real and round scale, rather than flat.

01:54Ants do not have lungs.

01:56They breathe through tiny orifices called spiracles.

02:00An ant can have 9 or 10 on each side of its body, depending on its species.

02:06The average color of the universe is poetically called cosmic light.

02:10In a study conducted in 2002, scientists discovered that the light from distant galaxies

02:15combined to create a beige color very close to white.

02:18Similar to the drink so much appreciated.

02:23There are negative decibels.

02:25The quietest place on Earth is the anechoic chamber of Microsoft in Redmond, in the United States.

02:31The sound level there reaches minus 20.6 decibels.

02:35These chambers are made of massive concrete and bricks,

02:38and rest on springs to prevent vibrations from penetrating the ground.

02:44Bananas are radioactive.

02:46Wait, where are you going?

02:48It's not that bad.

02:50Bananas are rich in potassium,

02:52and each banana is slightly radioactive due to the natural isotope potassium-40.

02:57In addition, your body contains about 16 mg of potassium-40,

03:03which makes you about 280 times more radioactive than a banana.

03:08In addition, it eliminates the excess of potassium-40 from a banana in just a few hours.

03:16There is simply no perfectly straight line.

03:19By zooming in enough, you will inevitably discover irregularities.

03:23Even the beam of a laser has a slight curvature.

03:27In case of emergency, fish form ordered lines.

03:31When they have to evacuate through narrow passages to escape danger, for example,

03:35the tetraneon bands line up to avoid bumping or blocking the way.

03:40Researchers think that this behavior indicates

03:45that fish are able to respect social rules even in crisis situations,

03:51unlike us humans.

03:56Hippos are unable to swim.

03:58Their bones are so large and dense that they barely allow them to float.

04:04Thus, these animals do not swim,

04:06but perform a kind of slow gallop against the bottom of the river.

04:09Hippos can also sleep underwater

04:11thanks to a reflex that allows them to go back to the surface,

04:14to take a deep breath,

04:16and then go back to the bottom without waking up.

04:21Lego blocks resist compression better than concrete.

04:25An ordinary plastic brick

04:27can withstand the weight of 375,000 other bricks before breaking.

04:32Theoretically, this would allow to build a tower of more than 3,200 meters high.

04:37But if we had to make bricks the size of a house,

04:40the cost would be prohibitive.

04:43If you ever go into space,

04:45you can take your yo-yo with you.

04:48In 2012, NASA astronaut Don Petit

04:51took his yo-yo aboard the International Space Station

04:55and used it to show a few tours.

04:58You see, a yo-yo rests mainly on the laws of angular conservation

05:02to make turns.

05:04And if you keep the string taut,

05:06these laws also apply in microgravity.

05:08There is a theory according to which

05:10we sweat when we are anxious

05:12to alert the brain of other people

05:14that they must prepare to face the danger

05:16that causes this anxiety.

05:18Brain imaging studies have shown

05:20that when you sniff the sweat produced by a person in panic,

05:23the regions of the brain responsible for emotional and social signals

05:26are activated.

05:28And when you are anxious,

05:30your sympathetic nervous system produces hormones,

05:32including adrenaline,

05:34which activates your glands.

05:36There are sky arches on Venus

05:38and they are called gloirs.

05:40A gloir looks like a series of colored concentric rings

05:42and is caused by the interference of light waves

05:44inside the droplets

05:46rather than by the process of reflection,

05:48refraction and dispersion

05:50of the light that produces the sky arches.

05:53Protons can take the form of donuts,

05:55spheres, peanuts

05:57or rugby balls.

05:59In other words,

06:01they decline under different shapes and sizes.

06:03Their appearance changes depending on the speed of the quarks,

06:05the smaller particles that make them up.

06:07If you look at the Moon

06:09from the southern hemisphere,

06:11it will seem to be upside down

06:13and the famous man in the Moon

06:15will look more like a rabbit.

06:17You will remember more of your dreams

06:19if you sleep badly

06:22You will remember more of your dreams

06:24if someone or something wakes you up

06:26in the middle of the night.

06:28Dogs tilt their heads

06:30when they listen to people

06:32to better spot familiar words

06:34like promenade.

06:36This also helps them to better understand

06:38the tone of your voice.

06:40It is also said that if a dog does not often tilt its head,

06:42it is because it depends more on its sight

06:44than its yes.

06:46When two mirrors face each other,

06:48they do not produce infinite reflections.

06:51Each successive reflection

06:53becomes darker than the previous one

06:55and ends up disappearing.

06:57Mirrors absorb a tiny fraction

06:59of the luminous energy that strikes them.

07:01As a result,

07:03the total number of reflections

07:05that a pair of mirrors can produce

07:07is limited to a few hundred.

07:09You can smell ants

07:11because many species

07:13produce strong-smelling chemical substances

07:15when they feel threatened,

07:17angry or crushed.

07:20Odontomachus ants

07:22release a chocolate smell

07:24when they are crushed

07:26while Lasius ants

07:28emit a citronelle smell

07:30when they are in danger.

07:32Giraffes emit a murmur

07:34to communicate with each other.

07:36Researchers think that this low-frequency murmur

07:38could be a form of contact scream

07:40between individuals

07:42separated from their herd.

07:44It can also help them to find themselves

07:46in the darkness.

07:48Despite these majestic creatures,

07:50some scientists think

07:52they also speak in their sleep.

07:56And here is an interesting anecdote

07:58just for you

08:00about a marathon runner

08:02who took more than 50 years

08:04to finish his race.

08:06The Japanese marathon runner

08:08Shizo Kanakuri

08:10was selected as one of the two athletes

08:12that Japan could send

08:14to the 1912 Stockholm Olympics.

08:16It turned out that

08:18after an exhausting 18-day trip

08:20to Stockholm,

08:22first by boat then by train,

08:24Kanakuri was exhausted.

08:26During the race, he stopped

08:28because his condition

08:30did not allow him to continue.

08:32He found himself in a garden party

08:34where he drank orange juice

08:36and rested.

08:38Ashamed of his failure,

08:40Kanakuri returned later to Japan

08:42without informing anyone,

08:44the Swedish authorities considered him

08:46as missing for 50 years

08:48before discovering that he lived

08:50peacefully in his native country.

08:52In 1967, he was given the opportunity

08:54to finish his race,

08:56which he accepted.

08:5854 years, 8 months, 6 days,

09:005 hours, 32 minutes

09:02and 20 seconds

09:04after starting his marathon,

09:06he finally finished it.

09:08It was a long journey

09:10because in the meantime,

09:12Kanakuri had 6 children

09:14followed by 10 grandchildren.

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