5 Fun Physics Phenomena


Five cool physics tricks, but how do they work?
Explanations: http://youtu.be/jIMihpDmBpY
Check out Audible.com: http://bit.ly/AudibleVe
Leave your ideas in the comments below or subscribe for the answers next week.

Chris Hadfield in AUS: http://sciencealert.com.au/spaceoddity/
All tickets now sold out.

The Cane Balance:
Slide your fingers in from the ends of a horizontal cane to find its centre of mass.

Shot and Edited by Pierce Cook at the YouTube Space LA.

Music by Amarante: http://bit.ly/VeAmarante

Видео загрузил: Veritasium


Просмотров: 4299434
Добавлено: 2 года назад
Длительность: 5:28
Комментарии: 7231

Тэги для этого Видео:veritasium  science  physics  five  fun  phenomena  tricks  tea bag rocket  magnetic cereal  cane balance  phone flip  intermediate axis  unstable rotation  center of mass  Phenomenon  diy science  



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Комментарии:

Fülya CanFülya Can (1 день назад)
I, who has nothing to do with physics - at all, would guess that the cereal is not dragged by the magnetic but by the water that reacts to the magnetic vibes. . ? .

Laura TewLaura Tew (4 дня назад)
With the teabag rocket it is because the hot air rises because it makes the air molecules move faster.

Star Atom Jinjo TweetyStar Atom Jinjo Tweety (7 дней назад)
The first: the left side has bigger mass that means it is heavier than the end of the right side.. so you tend to find the balance on the left side. The second: the speed of spin chooses the least energetic movement. The third: I guess Vanderwaals Force? The plastic cup has highly excited electrons so therefore it attracts the delta positive side of water. The fourth: cereal contains iron. The fifth: heat goes up like think of fire specially in 1 g gravity on Earth, therefore it floats up.
.. it is a quick reponse so do not judge me too much..

shanker lohanishanker lohani (8 дней назад)
love you Boss

Ho Wing YipHo Wing Yip (8 дней назад)
0:30 MINDBLOWN.

Abhigyan KashyapAbhigyan Kashyap (8 дней назад)
Such an interesting phenomenon....... 😑😑😑😑😑

Alexander PakAlexander Pak (9 дней назад)
1 trick is simple. You move your fingers and you feel if one side of the stick is going to fall. At That side you leave your finger and on the other side you move your finger still. So you do it unless your fingers will meet themselves

Tadeusz KlonowskiTadeusz Klonowski (10 дней назад)
#1 It's balancing itself because of difference between dynamic and static friction force

Divyesh GamotDivyesh Gamot (13 дней назад)
last one cause, the density difference is so high it can lift up the last few grams of paper!but paper must be very light

_*Austin Parker*__*Austin Parker*_ (13 дней назад)
0:05 WHERE AM I SUPPOSED TO GET A CANE?

_*Austin Parker*__*Austin Parker*_ (13 дней назад)
3:10 preservatives.

MrEdUrAtMrEdUrAt (15 дней назад)
Where is my dad?

Anastasia MajickAnastasia Majick (16 дней назад)
"Then set it on fire"

_untitld_untitld (16 дней назад)
i stopped watching this highly intellectual video which can further my understanding of our universe to watch porn. then came back to finish it.

aren't humans great

cool kidcool kid (16 дней назад)
Anyone click cause you thought it was about Danny brown

Peter HPeter H (17 дней назад)
Almost landed that 720 phone flip

Daniel MiddletonDaniel Middleton (17 дней назад)
teabag is easy. when it gets close to the bottom, tilt becomes so light that the suction from the fire using up the air above is able to list it

Chris BoothmanChris Boothman (23 дня назад)
How many people broke their phone because of this video

Philip YaoPhilip Yao (25 дней назад)
With the water one. With the negative force repelling, the molecule rotates until only the positive side is being attracted

neuro hydraulicsneuro hydraulics (26 дней назад)
Wonderful Vaeritasium people, here is a theory i'd like to discuss with you, please run it past you logic circuits;

Bouyancy creates a centre to peripheral potential force that relative to gravity is crucial in terms of biophysics.
Like a rubber submarine, with a rubber central heating system inside it. The deeper it goes underwater, the more it pushes back aginst the crushing forces around it.

This crushing force is fed through the rubber walls into the rubber pipes and struts inside the submarine and is continuously shifting, changing density and changing volume.
Even when completely still, the potential force stored in the elastic tissue is significant.

Any oscillations caused by sonic / seismic type energy the submarine encounters due to environmental noise AND internaly generated sound /pressure waves are altered by this potential force because density changes pitch, tone and volume.

The curved surfaces angle of the elastic membrane tissue changes as it is compressed and relaxed but even while still, acts as a parabolic sonic mirror to any internal vibrations,
curved egg shaped parabolic surfaces being the only efficient shape to deal with pressure differentials and bouyancy requirement.

Here for the rubber sub analogy to continue we have to fill the submarine with water and lift it onto the air, let's call it "H.M.S. human body" an anti submarine, whose job is to protect the water inside being evaporated off in all directions, and the sailors called kidneys, liver, spleen from being too dry or roughly treated.

The parabolic mirror shape of the fascia and skin type outer layer of the H.M.S. human body means that any regular sonic activity inside the submarine, eg.sailor heart playing his drums, will bounce around the watery internal cavities for a long time as water conducts sound brilliantly.

As the sound waves bounce off the satelite dish shaped outer shell, in certain places in the "human body" the sound waves form standing waves and nodal lines of extra volume and relative silence , especially if someone left the sound system on and it is generating feedback in very tight high pitched ultrasonic frequencies, and very low throbbing infrasonic frequencies.

Air behaves like a fluid and creates 1.03kg of force per square centimeter at sea level, the human body has on average nealry 2 square metres of skin.
That is two tonnes of crushing force being generated at seal level relative to being on a planet such as Mars.
If one stand inside a large enough bell jar and releases the potential energy, ie create a vaccuum the body expands as the potetial energy is released.

Does that mean that through diligent practice one could gain the ability to dilate the central nervous system in it's entirety and release this potential energy in tiny, invisble ranges of movement?
Hell yes! you just have to learn to NOT think for long periods of time as thinking contracts the nerves. Plus have fantastic postural alignments and superlative breathing habits.

Come on people, two tonnes of force at your fingertips!
The art is called nei kung and is popular in parts of China.
I learned it from a strange and wonderful man called Bruce Frantzis who runs a company called energy arts.

I am steeped in the language of physics from my family background (Father, grandfather all physicists) yet i learned these skills out of neccessity as i was disabled in my late teens.
I am trying to engage with open minded people about the possibility that there is a difference between genuine fighting masters of the art trying to talk to scientists and hippies mouthing off because they want to feel special.

Please check out my Youtube channel where I show these phenomena in action and let me know what you think.
And breathe from your belly;)

Zeninji -DZeninji -D (26 дней назад)
The finger with the weight on it eventually gains the traction to push weight onto the other finger, once the other finger has more weight it does the same thing back, until both fingers are together under the center of mass.

Genius ZGenius Z (28 дней назад)
i really liked it because i'm very curious about physics topics and unsolved equations but the problem is i haven't learned physics much .only in mid school and high school
does anyone know any physicist youtuber?
or a way to teach myself college's physics

Dari MelluscoDari Mellusco (1 месяц назад)
are those snatoms in the cup one?

HXAPÉWiZZHXAPÉWiZZ (1 месяц назад)
i have already (before watching this), done the phone flip.

tbdztbdz (1 месяц назад)
The first one is actually very easy to explain.
When you have a lengthy object like a cane, the amount of force applied to your hands depends on where your fingers are placed. If you place them exactly 10cm from each end, the end with the most weight will apply most force, and the other hand will easier move towards the middle. When that happens, there is a loss of force at the other end, and when it becomes small enough, the hand at that end will start to move towards the middle.

Mohsen EnsafdaranMohsen Ensafdaran (1 месяц назад)
Thank very much you for this beautiful channel!

YashasYashas (1 месяц назад)
I can't sleep for 10 days now

Bishnu MishraBishnu Mishra (1 месяц назад)
oh !! i liked it very much. i didn't know that polarisation of water by charged cup isn't the correct explanation for bending of water.

moonlymoonly (1 месяц назад)
thank you for your video

PerineumPerineum (1 месяц назад)
Cereal has iron. That's all I got.

cragnogcragnog (1 месяц назад)
that first one depends on you trying not to drop it. If you moved both fingers in at the same rate it would most likely not work, but you changed the rate either finger moved accordingly so that the cane didn't fall either side

I'm Not Sure About ThisI'm Not Sure About This (1 месяц назад)
CEREAL: it contains iron which is a mineral from which we get bones

TEABAG: the heat actually made it lighter than air as hot objects tend to go up

Todd LerfondlerTodd Lerfondler (1 месяц назад)
what im able to flip my phone like that...

Christian Pelchat | GamingChristian Pelchat | Gaming (1 месяц назад)
I read that book :D

m bm b (1 месяц назад)
IS IT NOT THAT THE HOT GAS OF THE TEA BAG BURNING IS MORE DENSE THAN THE STAND OF THE TEA BAG SO THE BURNING HOT GAS IS HOT AND HEAT RISES SO THE STRAND IS LIFTED UP WITH IT?

m bm b (1 месяц назад)
CEREAL IS MAGNETIC BECAUSE IT HAS MOFUCKING IRON IN IT. and it is also less dense than water so it can be moved around by the magnet while floating around on water. OR BECAUSE THE WATER IS ATTRACTED TO THE MAGNET SO THE WATER IS PULLING THE CEREAL WITH IT.

m bm b (1 месяц назад)
IS IT NOT SO THAT: hydrogen atoms are positive and oxygen atoms negative in H2O, Your body released e- and became less negatively charged, the cup absorbed the negative e- and became more negatively charged, cup= -, H= -, cup and H attracted, water drawn to cup?

Skinematic FilmsSkinematic Films (1 месяц назад)
Nice ring, I see you're an engineer!

TheRealRaichuTheRealRaichu (1 месяц назад)
The iron is cereal is magnetic

MDshayan!MDshayan! (1 месяц назад)
Now that's physics

Diamant MuskaDiamant Muska (1 месяц назад)
That's not a teabag rocket. It's a Norweigan Space Rocket

Lucas Chamorro TuduríLucas Chamorro Tudurí (1 месяц назад)
My takes are:

1- The finger that is closer to the center of mass supports more weight, and thus has a stronger contact and friction than the finger far away. This always makes the finger further away to move more easily to the center of mass than the one further away.
2- Aerodynamics, turbulence, and the fact that the secondary rotation axis has less moment of inertia.
3- The electric field from the cup is not uniform. I've heard that the electric field generated from rubbing can actually be very powerful.
4- Cereals have a lot of iron (?).
5- Hot air rises, taking the remains of the bag with it when it's light enough.

baileyboy125baileyboy125 (1 месяц назад)
Actually if you spin the phone fast enough along the long axis around its centre of mass it doesn't deviate from said axis.

A.J. MillerA.J. Miller (1 месяц назад)
I had a mini heart attack when you dropped your phone

Tyler ZangTyler Zang (1 месяц назад)
i peed a little on the toilet. just a lil

Rane_Rane_ (1 месяц назад)
3:12 cause it has iron in it..... Badum Tiss?

Shadow GamingShadow Gaming (1 месяц назад)
That was so dumb waste of my time

Blarph BlublubBlarph Blublub (1 месяц назад)
4. It's because it has iron fillings in 'em.
I don't know the others.

Toxic CaffeineToxic Caffeine (1 месяц назад)
One side of the phone is heavier, consequently making the phone rotate on a turned axis

Toxic CaffeineToxic Caffeine (1 месяц назад)
The cereal attracts to the magnet due to the great amount of iron in the cereal

Wolf EdmundsWolf Edmunds (1 месяц назад)
When you flip the phone like that, there are two ways the phone can rotate. Along the horizontal (pitch) and the vertical (roll) axes on the screen. It can't spin along the plane of the screen (yaw), for obvious reasons. The phone has a much larger moment of inertia around the pitch axis than the roll axis. Since angular momentum is Iω where ω is the rotational velocity, the smaller the moment of inertia, the faster something spins given the same momentum (like a figure skater). Thus the phone is very sensitive to rolling and very insensitive to pitching, meaning a tiny torque in the roll axis will send it spinning while a great torque in the pitch axis can barely turn it.

Cody BakerCody Baker (1 месяц назад)
theres iron in the cereal

ZechlinZechlin (1 месяц назад)
Isn't there iron in cereal?

John WinkJohn Wink (1 месяц назад)
if you flip the phone end over end in space it would spin end over end perfectly ( that's just based on my theory)..

Azenith FAzenith F (1 месяц назад)
He trolled us :(

iRgarieiRgarie (2 месяца назад)
Kind of an old video to be commenting on like this, but here's my text wall anyway. I don't know if any of this has already been said since I don't see anyway to search youtube comments?

(1) As you move your fingers inward, your brain tries to maintain the balance by subtly changing the speed of each finger. You can kinda see him doing this. Either that, or it has something to do with the weight on either side of your fingers changing as you move them in. This might cause the friction to change thereby slowing or speeding your fingers and maintaining the balance.
(2) There is a good video explaining the phone flipping thing but I don't remember who did it.
(3) Hmm, honestly I always believed the water was attracted because it was polar, like you said. I feel like I remember hearing that static electricity has a very strong gradient but I don't know.
(4) Most cereal has dietary iron added to it, but it is actually just very small iron filings. If you blend cereal up, put it in water in a clear container, and touch a magnet to the bottom, you'll see a small pile of iron filings. So that's why it's attracted to a magnet.
(5) As the tea bag burns it looses mass. Once enough, or all, of it has burned it is light enough to be picked up by the small current of heat created by the flame.

Just some thoughts. I'm curious to see what others have to say.

newestlands780newestlands780 (2 месяца назад)
the phone thing is to do with the airodynamics

PlayfulNikitaPlayfulNikita (2 месяца назад)
With center of mass, you actually balance the object, rather than magically meet your fingers in the middle. While moving fingers towards the center of mass, he was waiting for one of his finger to advance further for balance - that is why you can do it at any speed and start at any point. Watch his finger suddenly stop and wait for the other finger to catch up for balancing the object.

Henry SchmidtHenry Schmidt (2 месяца назад)
Cereal contains iron, I think

Lali PhiliposeLali Philipose (2 месяца назад)
what rubbish

Im Bad at Good NamesIm Bad at Good Names (2 месяца назад)
Isn't water pushed by magnets? Like no matter that pole it is?

VortexVortex (2 месяца назад)
3:10 Because cereal contains iron. Even if in very small amounts, it has it

TJ LabbeeTJ Labbee (2 месяца назад)
I can do #2 correctly, it just takes a bit of practice.

Michael S. GreenMichael S. Green (2 месяца назад)
God based magnetism on YouTube explains and demonstrates how all disciplines of science work. You should check it out and stop making lame videos that you don't understand.

PlankgangPlankgang (2 месяца назад)
water bends because of electro-static energy which pulls objects towards it

Victor Drouin ViallardVictor Drouin Viallard (2 месяца назад)
1. Friction increases on one finger when the stick balance its side. Then this finger won't move until the situation is inverted (the other finger moving)

green orangesgreen oranges (2 месяца назад)
For the last two things, cereal contains lots of fortified iron and for the teabag rocket the fire gives it heat and when the bat is fully burnt it floats up ( because heat rises ) as the ash is almost lighter than air it just needs that small amount of heat to make it rise like a hot air ballon it also works with napkins if you put the napkins on the top of a fire they will float up and start flashing

Yuvraj MallickYuvraj Mallick (2 месяца назад)
i think cereals have iron added i them.

Hector FHector F (2 месяца назад)
I remember when I was younger, my friend tried the first one on me with an imbalanced pole and out of coincidence I did it first time :)

Tumwiine AndrewTumwiine Andrew (2 месяца назад)
gd teacher

Ichiwo KonnichiwaIchiwo Konnichiwa (2 месяца назад)
It works because of science.

ThatGuyThere ThatGuyThereThatGuyThere ThatGuyThere (2 месяца назад)
He says that an text book example that is used and has been proven true hundreds of times is wrong, but can't say what actually happened

julie Nicholsonjulie Nicholson (2 месяца назад)
hands up everyone who dropped their phone trying the phone flip? sad faces for everyone who broke their phone trying the same.

FreshTechDIYFreshTechDIY (2 месяца назад)
cereal is following magnet beacause it has iron present in it that attarcted that strong magnet

PICKAJEWPICKAJEW (2 месяца назад)
1:29 cus it's totally a not an iPhone

sumit mehtasumit mehta (2 месяца назад)
about that cereal, may be it contains some iron in it. 😁😂

Demented GlitcherDemented Glitcher (2 месяца назад)
I'm not gonna watch this I just have to say go drop dead you faggy drop kick.

Nirup Kanti paulNirup Kanti paul (2 месяца назад)
The no. 4 incident happend because cereal producers add some amount of iron in their cereals to make them more healthy.... As it provides ion in our diet

Srivishnu RendlaSrivishnu Rendla (2 месяца назад)
Who else thinks this guy might be gay?

dontzenyourselfoutdontzenyourselfout (2 месяца назад)
...and does it matter? why?
vous êtes triste, trés triste
ora pro nobis

MattDoesStuffMattDoesStuff (2 месяца назад)
If i get 120 subs i will knock on random peoples doors and when they open the door i will scream pineapple i will make a video of it

Gamer 55Gamer 55 (2 месяца назад)
the cup attracts it because everything exerts magnetic force or gravitational energy in magnetism we assume every atom to be a magnet and when we static charge the cup , The atoms get aligned and therefore making it a magnet and it makes a magnetic field so eventually exerting gravitational energy and pulling the stream of water

Hollywood EnvyHollywood Envy (2 месяца назад)
For number 5 ... don't go to India, you'll have an exaltation like you won't believe ...

billybob joebillybob joe (2 месяца назад)
really you blurred the apple Logo
Its so obvious its insane

Max HaibaraMax Haibara (3 месяца назад)
3:58 he looks like the guy that receive miracle from the God in religious movie

SIMON ASIMON A (3 месяца назад)
4. serial has added iron in it

Alla AckbarAlla Ackbar (3 месяца назад)
Doesn't cereal have iron in it, making it slightly attracted to the magnets

Tiger H. LoreTiger H. Lore (3 месяца назад)
That's also an effective way to stop someone tea-bagging you: light the teabag on fire.

to be the manto be the man (3 месяца назад)
very good 😀😀😀😀😀😀

Steven GaulinSteven Gaulin (3 месяца назад)
The center-of-mass demonstration with the cane is not a physics phenomenon; it's a psychological phenomenon. You can't do it in "one shot" because your brain cannot accurately estimate the distribution of mass across the length of the cane. But you can do it by moving your two hands inward because you are successively computing, re-computing, and adjusting; as you move your hands you get visual and tactile feedback that lets you correct as you go.
Maybe I'll think about some of the others tomorrow.

Michael LoweMichael Lowe (3 месяца назад)
the cereal has iron in it

FrontyerFrontyer (3 месяца назад)
Cereal is magnetic because it contains iron.

Tea Rocket: My guess is that it heats the air and it creates different airpreassures, so when burned out it will get sucekd up in the air.

ItsReignItsReign (3 месяца назад)
Anyone notice the background of the beginning song? Halo?

mueed alimueed ali (3 месяца назад)
https://www.fiverr.com/mueedali511/solve-any-physics-problems-and-physics?arrived_from_manage_gigs=true&display_share=true

BenBen (3 месяца назад)
for the first one it works with the f=u*N and at every state, the finger will move if the N is "=" to each other and then will find the center of mass

idrink bleachidrink bleach (3 месяца назад)
The cereal had iron I'm sure that's why it reacts to magnets

Name MrnameName Mrname (3 месяца назад)
1: When more mass is at one side, gravity pulls it more, less friction at the OTHER finger, then, when more mass is on the other side thr other fingers goes closer, this happens only 1 time i think, and it doesnt lift fully because then the finger supporting it would need to move
2: Air resistance OR instabilities caused by the metal frame-heavier i know objects have a center of mass idk.
3: Quantum magic or awesome science
4: all objects can get magnatically aligned from strong magnets. The water kills all ftiction so it moves easily. I think this has sth to do with 3
5: The material is very light and in the end a very thin string survives. The hot air goes up, air resistance from the string pulls it up.
I say this in all my science comments, this is what happens when a small person is curious about EVERYTHING from 8 years old

Pratik PoojaryPratik Poojary (3 месяца назад)
you said it wrong, the positive side should be of hydrogen and the to oxygen molecules on it are negative

tarun patiltarun patil (3 месяца назад)
amazing

hemanth Kumarhemanth Kumar (3 месяца назад)
It s good so nise

Natalia KurzNatalia Kurz (3 месяца назад)
The cereal is attracted to magnets because it includes a very small percentage of iron. In Third grade they thought us something similar.

AdminTuberAdminTuber (3 месяца назад)
center of mass- when one has more mass over it - friction is higher (friction coefficient x normal) other moves --> finally will reach center of mass

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