Our planet rotates around its axis from west to east at a speed of over a thousand miles per hour at the equator! And this pattern has lasted for billions of years since the Earth was formed. But “what if” one day, our planet suddenly started to rotate backward, from east to west? It would be one thing if the Earth's continents and oceans were situated symmetrically against the equator when the change of the direction happened. In this case, the only change people would notice would be the climate, which would turn into a mirror image of the current one. In other words, there’d be no dramatic changes. But since life on our planet is rarely about symmetry, the effects of the Earth rotating backward would be way more complicated. Other videos you might like:
Stephen Hawking’s 7 Predictions of Earth’s Demise in the Next 200 Years https://www.youtube.com/watch?v=Lq9wipOftXw&
What Would a Journey to the Earth’s Core Be Like? https://www.youtube.com/watch?v=3FoSAHk7DMA&
What If the Earth Stopped Spinning Right Now https://www.youtube.com/watch?v=Pex2gaCJ954& TIMESTAMPS:
What if it happened SUDDENLY 1:02
What if it rotated from east to west right from the beginning 2:15
A completely different species instead of us?! 4:21
What if the Earth's core cooled down 5:28
What if there were no magnetic field 5:56 SUMMARY:
– In the case of an abrupt switch of the direction, an instant change in speed would make about 2,000 miles per hour!
– Buildings and other man-made structures would collapse, sending tons of debris into the air and creating chaos.
– In short, the Earth would turn into a gloomy, muddy mess.
– The different spinning direction of the planet would create unexpected weather conditions on all the continents, and the Earth itself would be a totally different place!
– Western Europe would be plagued by severe, freezing winters every year. And, vice versa, Russia would warm up and lose the title of one of the coldest countries in the world.
– The area from the Middle East to Central Africa would be covered with lush, dense forests. And the rest of the deserts would be either covered with grass or scattered trees.
– There would be much more greenery on our planet, and, therefore, more oxygen for everyone to breathe.
– Now, the ocean is swarming with phytoplankton bacteria. But on that different Earth, instead of plankton, cyanobacteria would dominate.
– The chances are high that on a backward-spinning Earth, people would be replaced with a completely different species.
– Somewhere incredibly deep beneath the surface of our planet lies the Earth's core – a ball of scorching-hot iron which is surrounded by boiling liquid metal.
– One of the things that makes life on the Earth possible is the geomagnetic field. This very field is created by the Earth's core!
– If there’s no magnetic field, there's also no atmosphere! That's why some time later, the Earth would start to resemble Mars a little bit too much for my liking.
– The eternal cold and lack of oxygen would either finish us, or prevent us from living normal lives.
– The Earth would probably see a radioactive wave onslaught, which would overheat it to a degree at which it would become uninhabitable. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More What If Earth Started to Spin Backwards Videos

So, you tap a button and something happens — that’s how the world works, right? Well, not exactly. The world is actually filled with buttons that are only there to seem like they do something, while in fact being useless. And not only buttons — there are all kinds of things that are there for no apparent reason. If you live on, say, 15th floor and you’re in a hurry to get home because your bladder is about to burst, for example, you’ll probably feel fine running up the stairs. But if you decide to wait for the elevator instead, you’ll smash that door close button until the doors finally close. Which they will do awfully slowly. Well, did you know that in the US, these buttons don’t work at all? Other videos you might like:
20 Interesting Facts You're Too Lazy to Google https://www.youtube.com/watch?v=TZqFokYyluw&
12 Facts That'll Change Your Perception of Time Forever https://www.youtube.com/watch?v=CDso1ph6004&
10 Fun Facts About America Even Americans Don't Know https://www.youtube.com/watch?v=sqAaFjavfhE& TIMESTAMPS:
Pedestrian crossing buttons 0:22
Elevator door close buttons 2:19
Thermostat control in hotels and offices 3:53
Progress bars 5:40
Calorie counters on treadmills 6:40
Graceful failures 7:32 #placebo #strangefacts #brightside SUMMARY:
– Transport authorities sometimes switch off the functionality of these traffic buttons on purpose. In New York, for example, there are 1,000 of them, but currently only 100 actually work when you press them.
– Such buttons have an important psychological effect: doing something feels better than not doing anything. When you press the button at a crossing, you feel more assured that the light will eventually switch to green.
– Not to disrupt the work of the whole network, many of the traffic control switches were turned into placebo buttons.
– The elevator doors will stay open for no less than the time appointed to them, no matter how much or how long you mash that button.
– So unless you’re an emergency service worker or just happen to know the override code, you won’t be able to make the doors close faster.
– If you live outside the US, though, your chances of getting a working close button are much higher. In many countries, there are no such strict regulations, so you can easily find an elevator where, if you press the door close button, the doors will actually shut immediately.
– Most office buildings have a central heating, ventilation, and air conditioning system (HVAC for short). And the thing about this central system is that you can’t actually affect it from anywhere outside the control center.
– In fact, there are two general types of office thermostats: one that is total placebo and one that is only partially so.
– The partial placebo thermostat has a little bit of sway: it can change a couple degrees in both directions, but no more than that.
– Whenever you download a file from the Internet or install a new app on your device, you see a bar that informs you of how much time you have left to wait. Ever seen it stuck at 99% for, like, forever, though? Yeah, it’s exactly what it seems: the progress bar is always wildly inaccurate.
– When you run, you burn calories for sure, but the precise amount depends on various factors, such as your weight, overall fitness, and body fat percentage.
– This counter is, once again, only there to assure you that you’re doing everything right. The downside of this is that even if you’re not doing it right, the treadmill won’t let you know.
– When a call attempt failed, the system didn’t tell the caller about it, but simply switched to another recipient instead. So when somebody took the phone on the other end of the line, you apologized for dialing a wrong number and tried again. This way, you didn’t feel the frustration of having a failed call. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More You See 6 Buttons Every Day But They Do Nothing Videos

Is your school considering a ban on cellphones? Don’t let it happen! What are you going to look at and listen to all day? Rather than get upset, why not launch your first campaign? “Save the cellphone!” Who knows, you may become a leader. Start by gathering convincing reasons to keep cellphones in school. For example, convince your parents or guardians. They’re your best allies. Using a cellphone, you can turn homework in at the last minute. You can practice reading and writing as it’ll be in the future. Also, auditory and visual learners can benefit from recording the class on their cellphone! Other videos you might like:
Stop Charging Your Phone at Night, Here's Why https://www.youtube.com/watch?v=jnb4rdaKW6k&
You Use This Everyday But It Holds Secrets from You https://www.youtube.com/watch?v=Xx0Q2-5qPgg&
12 Signs Your Computer Has Been Hacked https://www.youtube.com/watch?v=I6XFaUT2RfU& TIMESTAMPS:
Convince your parents or guardians 0:42
… that having a cellphone in school will improve your grades 0:56
And remind them how overprotective you are! 3:01
Convince your teachers 3:30
… that having cellphones at school increases student vocabularies. 4:19
Also, phones can help students get out of a jam. 4:38
Last but not least: Convince your fellow students! 6:15 #teenageproblems #smartphone #brightside SUMMARY:
– Some students ride the bus for hours. Hours that could be spent getting an early start on your homework.
– Using a cellphone, you can turn homework in at the last minute. You won’t always do that, but tell your parents you want to be graded on what you turn in, not when you submit it.
– The methods you learn in school should remain applicable in 20 years when, instead of writing cursive or hauling around heavy books, we’ll be typing book reports and reading online.
– Mom sometimes mistakes it for her cellphone and takes it to work. So, she misses messages from her clients all day and instead gets texts from your friend, Emma.
– Dad could text you when he’s going to be late picking you up. Which is, like, always. With a cellphone, instead of waiting in the rain, you could study in the nice, dry library!
– Auditory and visual learners can benefit from recording the class on their cellphone. Ask your teacher before you film them.
– When a student needs individual help, the rest of the class can watch educational videos.
– Having cellphones at school increases student vocabularies by helping them learn cool words like “deterrent”!
– Besides that, you can text each other about when the superintendent is coming down the hall and coordinate a surprise party!
– The biggest reason you’ll give the administration is that, no matter what the rule is, some kids are going to bring cellphones to school anyway.
– But you want to make sure they’re fired up! You can’t win this fight alone. You need your friends campaigning with you, so remind them what’s at stake. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More Why Cell Phones Should Be Allowed in School Videos

Try to remember the hottest you've ever felt! The stifling heat and irking sensation of sweat trickling down your back and forehead. But if you think that was hot, what if I tell you there are things in our Universe that are literally billions of times hotter? As you may know, the Solar System itself can be a pretty scorching place. The average temperature of the Earth's core reaches a blazing 10,800 degrees F, which is 800 degrees higher than the surface of the Sun! As for the Sun's super-hot center, it heats up to 27,000,000 degrees F! But in terms of the Universe, these temperatures are nowhere near the hottest! Other videos you might like:
The Solar System Is Not Like You Think It Is https://www.youtube.com/watch?v=-FvpAe3MacM&
What Will Happen In The Next 5 Billion Years? https://www.youtube.com/watch?v=1rqn0wL4VS8
The Real Size of the Universe (Even a Child Understands) https://www.youtube.com/watch?v=T3T08WOlFk4& TIMESTAMPS:
The temperature of a supernova 0:49
The highest temperature was discovered… in Switzerland 1:31
What Absolute Zero is 3:49
The most naturally-cold thing in the Universe 4:56
The coldest temperature people have ever recorded on Earth 5:39
The coldest habitable place in the world 7:02
The hottest place on Earth 8:23 #hottestthings #coldestthings #brightside Preview photo credit: The Boomerang nebula, called the "coldest place in the universe," reveals its true shape to the Atacama Large Millimeter/submillimeter Array (ALMA) telescope: By NRAO/AUI/NSF/NASA/STScI/JPL-Caltech, https://www.nasa.gov/centers/jpl/news/alma20131025.html
Supernova remnant W49B. X-ray: NASA/CXC/MIT/L.Lopez et al; Infrared: Palomar; Radio: NSF/NRAO/VLA, https://www.nasa.gov/mission_pages/chandra/news/w49b_remnant.html
Animation is created by Bright Side. SUMMARY:
– The temperature at the core of a supernova is an incredible 6,000 times higher than that of the Sun's core. And that means it can reach several billion degrees F within microseconds!
– The highest temperature has been discovered – or is it better to say created? – on Earth; in Switzerland, to be exact.
– In 2012, scientists at CERN's Large Hadron Collider crashed the ions of lead to "cook" a so-called "subatomic soup." The result was a plasma with an astonishing temperature of 9.9 trillion degrees F!
– Theoretically, there’s a point at which atoms stop moving. This temperature is called Absolute Zero, and it's equal to 0 degrees Kelvin or -459.67 degrees F.
– Several places in the Solar System come pretty close to Absolute Zero. For example, craters near the South Pole of the Moon are permanently shadowed and never see sunlight.
– But the most naturally-cold thing in the visible Universe is the mysterious Boomerang Nebula. This nebula is located approximately 5,000 light-years away from the Earth, and its temperature is considered to be just 1 Kelvin, or -four hundred some degrees F!
– The coldest temperature people have ever recorded was on Earth! It happened in an Italian underground laboratory, where scientists chilled a 35-cubic-ft chunk of copper to an incredible 6 millikelvins.
– The coldest habitable place in the world is Oymyakon village in Russia. There, the temperature often drops below 32 degrees F in September, and it doesn't get any warmer until the middle of April.
– The temperature in the village dropped to -96 degrees F, which became the coldest recorded temperature in the Northern Hemisphere! – How about we move to the hottest place on the Earth? It's Death Valley in California. Unfortunately, researchers are still arguing about whether this place holds the record for the hottest ever recorded surface temperature: 201 degrees F on July 15, 1972. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More The Most Extreme Temperatures in the Universe Videos

They say the eyes are the window to the soul. But your handwriting just might be too! There's even a whole science that studies it – graphology. By the way, criminal investigators often work with them. And here’s how they figure out if someone tells a lie – there are drastic changes in their handwriting style throughout a text. Anyway, graphologists determine different personality traits just by looking at the small details of someone's handwriting. Wanna find out yours? Then take a piece of paper and scribble any sentence on it. Put down your signature, too. Other videos you might like:
10 Signs You’re Way More Intelligent Than You Realize https://www.youtube.com/watch?v=nlJ4WIj3j24
What Your Eyebrow Shape Can Say About Your Personality https://www.youtube.com/watch?v=waHOHeDomio
Your Sleeping Position Says All the Truth About You https://www.youtube.com/watch?v=p8WXI6Brl8w TIMESTAMPS:
How big are your letters? 0:40
Do they slant? 1:28
How much space is there between your words? 2:07
Are the letters in one word cramped or not? 2:40
Are the letters in one word connected? 3:23
How much pen pressure do you apply? 3:56
Cursive or print letters? 4:20
What’s the shape of your letters? 5:15
What does your “o” look like? 5:37
How do you write “e”? 6:02
How do you cross your “t”? 6:25
What does your signature hide? 6:59
What your handwriting can tell about your health 7:26 #personalitytest #graphology #brightside SUMMARY:
– If your letters are on the big side it means that you’re pretty outgoing. You love being around people and being the center of attention. Small letters show that you’re shy when it comes to interacting with people.
– If your letters tend to slant to the right, you’re deeply attached to your family and friends. Left-slanted writing says that you’re rather reserved and don’t express your emotions much.
– Noticeably wide spacing between words indicates that you prefer to keep your distance from people. Narrow word spacing shows that a person wants emotional closeness with others.
– If the spacing between letters is average, then you’re friendly and outgoing by nature and can make friends with almost anyone. Letters that are far away from each other reflect an easy-going personality.
– If you connect letters while writing, then you have good logical skills. Disconnected letters reveal a defensive nature. But you have a good intuition which helps you avoid unpleasant situations.
– Light pressure shows that you’re very sensitive and empathetic. Writing with heavy pressure is typical for people who are committed to close people and activities.
– If you prefer using print letters then others most likely see you as a really confident person. Writing in cursive can indicate that a person loves doing everything perfect and following rules.
– Pointed letters can be a sign that the person is smart and curious. Rounded letters are common for creative people and kind-hearted people.
– If your signature is legible and sharp, you’re a strong person and don’t like to pretend. If your signature is illegible, you value privacy and you’re hard to read and understand.
– If your writing is excessively forceful, it might be a sign of high blood pressure. Tiny cramped letters with a varying slant that are hard to read might indicate some psychological or brain problems. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More What Your Handwriting Says About Your Character Traits Videos

They say the eyes are the window to the soul. But your handwriting just might be too! There's even a whole science that studies it – graphology. By the way, criminal investigators often work with them. And here’s how they figure out if someone tells a lie – there are drastic changes in their handwriting style throughout a text. Anyway, graphologists determine different personality traits just by looking at the small details of someone's handwriting. Wanna find out yours? Then take a piece of paper and scribble any sentence on it. Put down your signature, too. Other videos you might like:
10 Signs You’re Way More Intelligent Than You Realize https://www.youtube.com/watch?v=nlJ4WIj3j24
What Your Eyebrow Shape Can Say About Your Personality https://www.youtube.com/watch?v=waHOHeDomio
Your Sleeping Position Says All the Truth About You https://www.youtube.com/watch?v=p8WXI6Brl8w TIMESTAMPS:
How big are your letters? 0:40
Do they slant? 1:28
How much space is there between your words? 2:07
Are the letters in one word cramped or not? 2:40
Are the letters in one word connected? 3:23
How much pen pressure do you apply? 3:56
Cursive or print letters? 4:20
What’s the shape of your letters? 5:15
What does your “o” look like? 5:37
How do you write “e”? 6:02
How do you cross your “t”? 6:25
What does your signature hide? 6:59
What your handwriting can tell about your health 7:26 #personalitytest #graphology #brightside SUMMARY:
– If your letters are on the big side it means that you’re pretty outgoing. You love being around people and being the center of attention. Small letters show that you’re shy when it comes to interacting with people.
– If your letters tend to slant to the right, you’re deeply attached to your family and friends. Left-slanted writing says that you’re rather reserved and don’t express your emotions much.
– Noticeably wide spacing between words indicates that you prefer to keep your distance from people. Narrow word spacing shows that a person wants emotional closeness with others.
– If the spacing between letters is average, then you’re friendly and outgoing by nature and can make friends with almost anyone. Letters that are far away from each other reflect an easy-going personality.
– If you connect letters while writing, then you have good logical skills. Disconnected letters reveal a defensive nature. But you have a good intuition which helps you avoid unpleasant situations.
– Light pressure shows that you’re very sensitive and empathetic. Writing with heavy pressure is typical for people who are committed to close people and activities.
– If you prefer using print letters then others most likely see you as a really confident person. Writing in cursive can indicate that a person loves doing everything perfect and following rules.
– Pointed letters can be a sign that the person is smart and curious. Rounded letters are common for creative people and kind-hearted people.
– If your signature is legible and sharp, you’re a strong person and don’t like to pretend. If your signature is illegible, you value privacy and you’re hard to read and understand.
– If your writing is excessively forceful, it might be a sign of high blood pressure. Tiny cramped letters with a varying slant that are hard to read might indicate some psychological or brain problems. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More What Your Handwriting Says About You Videos

Only the people working at airports know how things really go down there, and they have many secrets they don’t want you to know. Did you know, for example, that most airports have specific experts called profilers? Their job is to notice the non-verbal signs of anxiety, such as people licking their lips, itching, or looking around a lot. Also, in a lot of big airports, there are special cameras that can detect a certain level of aggression. These cameras transmit the information to a computer and, in cases of dangerous levels of aggression, the suspect will be stopped by airport security for a detailed inspection. Interested? Then check out these surprising truthful facts from the airport world every traveler will like to know. Other videos you might like:
A Man Spent 18 YEARS at the Airport https://www.youtube.com/watch?v=MvxlkkJlZAw&
33 Little-Known Airport Facts to Travel Easier https://www.youtube.com/watch?v=82suLsvc-oY&
Why No One Should Use Airport USB Charging Stations https://www.youtube.com/watch?v=4gJlkS_WxZA& TIMESTAMPS:
They’re specially trained to analyze “off” behavior 0:34
They know how aggressive you are 1:41
They have no idea what happens to your luggage once it leaves the airport 2:25
They have dogs that check your bags 3:36
Your food is cooked around the clock 4:32
The airport controls the planes more than you’d think 5:20
They most certainly will check the validity of your visa, no excuses 6:00
They know what’s been in your hands 6:37 Preview photo credit: Passengers sitting and waiting for departure inside of Frankfurt Pearson Airport at Frankfurt, Germany on April 28, 2018: By Marina113/Depositphotos.com, https://depositphotos.com/213361630/stock-photo-frankfurt-germany-april-28-2018.html
Animation is created by Bright Side. #airports #airtravel #brightside SUMMARY:
– Profilers work in both the main halls and in passport control. The typical question they ask is, “What's the purpose of your visit?” They then check the person's reaction to this enquiry. No matter how reserved a passenger is, if they have something to hide, TSA officers will find out thanks to the tiniest cues in people's behavior.
– Experts can detect an individual’s specific reactions by checking their heart rate, respiration, and body temperature. Perhaps one day we’ll all go through security checks without even realizing it!
– Airport staff don’t know once it leaves their territory, and they probably don’t really care, sorry. Baggage is sorted automatically: scanners scan the barcode and sort the baggage according to its destination. So if your luggage doesn't move fast enough, it can be late for your connecting flight. Or, the exact opposite, your bag gets to your destination before you do because you’re stuck at passport control.
– Before your luggage even gets on the plane, it goes through five security levels, and one of them (besides scanning the contents) includes being checked by a special dog that can sniff out dangerous chemicals.
– Unlike police dogs, the ones working at airports aren't trained to frighten or intimidate people. The most popular sniffer breeds are Golden Retrievers, Labs, and German Shorthaired Pointers.
– Most airports are equipped with giant kitchens where the food for passengers is prepared. These kitchens usually cook food for different airlines at once. And since that oh-so delightful airplane food must be cooked about 6-10 hours in advance, these kitchens have to work 24/7!
– Dispatchers not only control the planes in the sky (like you usually see in movies), they also control their movement on the ground as well as the lighting on the runways. That's why there are 3 types of air traffic controllers: en-route, terminal, and tower.
– If the airport staff finds out that your visa has expired or you just don’t have one when you enter their country, you’ll be deported by the same airline that brought you there. Not to mention, they have to foot the bill for the ticket as well, which means you can return home for free!
– Airport staff sometimes ask passengers to rub their hands on a piece of cloth before putting it into a special machine. It might seem kind of scary, but it’s actually harmless. You’re simply being checked by a machine called an atomizer. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More 8 Secrets Airport Staff Don’t Want You to Know Videos

Even though traveling by plane is common nowadays, these huge steel birds are still surrounded by secrets and myths that give birth to a lot of questions. Pardon the pun, but it’s high time to get more answers! Ever noticed, for example, how on a cold day, you see your own puff of breath when you exhale? The exact same thing happens to a plane. The temperature at 25,000 feet or higher, which is cruising altitude, is really low, around -30 degrees Fahrenheit. Ok, but why are these contrails sometimes long and sometimes short? Other videos you might like:
Why Planes Don't Fly Over the Pacific Ocean https://www.youtube.com/watch?v=00AT5h_sOQM&
Why Planes Don't Fly Faster https://www.youtube.com/watch?v=bnfse4NXo0k&
What Happens When a Bird Flies Into a Plane Engine https://www.youtube.com/watch?v=CozYL-_ttEc& TIMESTAMPS:
Why do planes leave white trails in the sky? 0:20
Why can’t planes fly when it’s extremely hot? 1:46
Can a plane fly on one engine? 2:26
Do planes’ oxygen masks have only 15 minutes of air? 3:05
What are those white spiral marks on airplane engines? 3:35
Is there the “safest” seat on an airplane? 4:03
Why are there black triangles inside a plane’s cabin? 4:30
Why are airplane windows round? 5:05
Why does the plane’s food taste bad? 5:36
Is it possible to avoid turbulence? 6:04
Why do your ears pop during flying? 6:41
Are a plane’s tray tables the dirtiest things on board? 7:17
What citizenship does a baby born on board get? 7:47
Why are most planes white? 8:20
Why are there no parachutes on board? 8:53 #planes #aviation #brightside SUMMARY:
– The cold air condenses, and sometimes even freezes the hot exhaust fumes, creating those white “tails” which look a lot like smoke. That’s why they’re often called "condensation trails", or contrails.
– Long contrails form in humid conditions, while low humidity makes them much shorter.
– Hot air is less dense than cool air. This means the air molecules are spread further apart from each other, so they come into contact with the plane’s wings less. As a result, it’s harder for a plane to take off.
– Losing an engine in-flight isn’t even considered a serious problem by pilots. This is mainly because planes that fly over oceans, or for long-distance routes, have special certificates that indicate the exact time they can operate safely with one engine.
– If the cabin is depressurized at a high altitude, the passengers won’t be able to breathe, so they use oxygen masks. At the same time, the pilot will start descending right away to get lower than 10,000 feet, where it’s possible to breathe normally again.
– Most airlines claim that the safest seat is just a myth. But statistics of airplane crashes beg to differ. They say that this seat is at the back.
– The black stickers are located on about four windows in a cabin. Each of them is aligned with the edge of the wings.
– The frequent pressurization and depressurization caused the window corners to deform and even break. Turned out, round windows can withstand the pressure of cruising altitude much better.
– Apart from the fact that, on board, you’ll get only defrosted dishes which’ve lost a big part of their flavor, the pressurization of the cabin is to blame.
– If you’re a nervous flyer, here’s a tip for you – choose morning flights, because the air is less bumpy at this time.
– Ears pop because there’s a rapid change in pressure when a plane reaches a cruising altitude or lands. There’s not enough time for the pressure inside the inner ear and the air pressure outside to equalize.
– Sadly, tray table surfaces have eight times more bacteria than the lavatory flush buttons. Unfortunately, quite often, cleaning crews don’t have enough time between flights to take care of everything properly.
– A newborn can become the citizen of the country where the airline is registered; the country over which they were born; or the country where the plane landed.
– Training for skydivers requires many hours, in which they learn all the details about handling a parachute and how to land safely. What’s more, even the most experienced skydivers don’t jump from an altitude higher than 15,000 feet. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
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More Why Planes Leave Trails in the Sky Videos

Even though traveling by plane is common nowadays, these huge steel birds are still surrounded by secrets and myths that give birth to a lot of questions. Pardon the pun, but it’s high time to get more answers! Ever noticed, for example, how on a cold day, you see your own puff of breath when you exhale? The exact same thing happens to a plane. The temperature at 25,000 feet or higher, which is cruising altitude, is really low, around -30 degrees Fahrenheit. Ok, but why are these contrails sometimes long and sometimes short? Other videos you might like:
Why Planes Don't Fly Over the Pacific Ocean https://www.youtube.com/watch?v=00AT5h_sOQM&
Why Planes Don't Fly Faster https://www.youtube.com/watch?v=bnfse4NXo0k&
What Happens When a Bird Flies Into a Plane Engine https://www.youtube.com/watch?v=CozYL-_ttEc& TIMESTAMPS:
Why do planes leave white trails in the sky? 0:20
Why can’t planes fly when it’s extremely hot? 1:46
Can a plane fly on one engine? 2:26
Do planes’ oxygen masks have only 15 minutes of air? 3:05
What are those white spiral marks on airplane engines? 3:35
Is there the “safest” seat on an airplane? 4:03
Why are there black triangles inside a plane’s cabin? 4:30
Why are airplane windows round? 5:05
Why does the plane’s food taste bad? 5:36
Is it possible to avoid turbulence? 6:04
Why do your ears pop during flying? 6:41
Are a plane’s tray tables the dirtiest things on board? 7:17
What citizenship does a baby born on board get? 7:47
Why are most planes white? 8:20
Why are there no parachutes on board? 8:53 #planes #aviation #brightside SUMMARY:
– The cold air condenses, and sometimes even freezes the hot exhaust fumes, creating those white “tails” which look a lot like smoke. That’s why they’re often called "condensation trails", or contrails.
– Long contrails form in humid conditions, while low humidity makes them much shorter.
– Hot air is less dense than cool air. This means the air molecules are spread further apart from each other, so they come into contact with the plane’s wings less. As a result, it’s harder for a plane to take off.
– Losing an engine in-flight isn’t even considered a serious problem by pilots. This is mainly because planes that fly over oceans, or for long-distance routes, have special certificates that indicate the exact time they can operate safely with one engine.
– If the cabin is depressurized at a high altitude, the passengers won’t be able to breathe, so they use oxygen masks. At the same time, the pilot will start descending right away to get lower than 10,000 feet, where it’s possible to breathe normally again.
– Most airlines claim that the safest seat is just a myth. But statistics of airplane crashes beg to differ. They say that this seat is at the back.
– The black stickers are located on about four windows in a cabin. Each of them is aligned with the edge of the wings.
– The frequent pressurization and depressurization caused the window corners to deform and even break. Turned out, round windows can withstand the pressure of cruising altitude much better.
– Apart from the fact that, on board, you’ll get only defrosted dishes which’ve lost a big part of their flavor, the pressurization of the cabin is to blame.
– If you’re a nervous flyer, here’s a tip for you – choose morning flights, because the air is less bumpy at this time.
– Ears pop because there’s a rapid change in pressure when a plane reaches a cruising altitude or lands. There’s not enough time for the pressure inside the inner ear and the air pressure outside to equalize.
– Sadly, tray table surfaces have eight times more bacteria than the lavatory flush buttons. Unfortunately, quite often, cleaning crews don’t have enough time between flights to take care of everything properly.
– A newborn can become the citizen of the country where the airline is registered; the country over which they were born; or the country where the plane landed.
– Training for skydivers requires many hours, in which they learn all the details about handling a parachute and how to land safely. What’s more, even the most experienced skydivers don’t jump from an altitude higher than 15,000 feet. Music by Epidemic Sound https://www.epidemicsound.com/ Subscribe to Bright Side : https://goo.gl/rQTJZz
—————————————————————————————-
Our Social Media:
Facebook: https://www.facebook.com/brightside/
Instagram: https://www.instagram.com/brightgram/
5-Minute Crafts Youtube: https://www.goo.gl/8JVmuC Stock materials (photos, footages and other):
https://www.depositphotos.com
https://www.shutterstock.com
https://www.eastnews.ru —————————————————————————————-
For more videos and articles visit:
http://www.brightside.me/

More Why Planes Leave White Trails in the Sky Videos