### Veritasium

- Video 381
- Aufrufe 2 311 857 012
- subscribers 15 Mio.
- Beigetreten 21 Jul 2010

An element of truth - videos about science, education, and anything else I find interesting.

### Video

### The Surprising Genius of Sewing Machines

- Aufrufe 7 Mio.
Vor 14 Tage

### What The Longest-Running Study on Happiness Reveals

- Aufrufe 2,8 Mio.
Vor 21 Tag

### World's Best Night Vision Goggles

- Aufrufe 3,7 Mio.
Vor Monat

### The Problem With Science Communication

- Aufrufe 2,4 Mio.
Vor Monat

### How One Line in the Oldest Math Text Hinted at Hidden Universes

- Aufrufe 5 Mio.
Vor Monat

### The Man Who Killed Millions and Saved Billions (Clean Version)

- Aufrufe 1,8 Mio.
Vor Monat

### Extreme Breath-Holding

- Aufrufe 2,1 Mio.
Vor 2 Monate

### All The Times We Nearly Blew Up The World

- Aufrufe 2,4 Mio.
Vor 2 Monate

### How The Most Useless Branch of Math Could Save Your Life

- Aufrufe 5 Mio.
Vor 3 Monate

### Should Airships Make a Comeback?

- Aufrufe 2,6 Mio.
Vor 3 Monate

### I Took an IQ Test to Find Out What it Actually Measures

- Aufrufe 6 Mio.
Vor 4 Monate

### The Real Story of Oppenheimer

- Aufrufe 10 Mio.
Vor 4 Monate

### The Hidden Science of Fireworks

- Aufrufe 3,2 Mio.
Vor 4 Monate

### The Most Misunderstood Concept in Physics

- Aufrufe 10 Mio.
Vor 5 Monate

### I Vacuum Venom from the World's Deadliest Spider

- Aufrufe 2,3 Mio.
Vor 5 Monate

### Mathematicians Use Numbers Differently From The Rest of Us

- Aufrufe 5 Mio.
Vor 6 Monate

### The Fastest Maze-Solving Competition On Earth

- Aufrufe 15 Mio.
Vor 6 Monate

### Why The First Computers Were Made Out Of Light Bulbs

- Aufrufe 4,3 Mio.
Vor 6 Monate

### How NASA Reinvented The Wheel

- Aufrufe 11 Mio.
Vor 7 Monate

### Getting Buried In Concrete To Explain How It Works

- Aufrufe 8 Mio.
Vor 7 Monate

### How Quantum Computers Break The Internet... Starting Now

- Aufrufe 7 Mio.
Vor 8 Monate

### World's Strongest Magnet!

- Aufrufe 11 Mio.
Vor 8 Monate

### The Most Controversial Problem in Philosophy

- Aufrufe 2,9 Mio.
Vor 9 Monate

### The Stickiest *Non-Sticky* Substance

- Aufrufe 6 Mio.
Vor 10 Monate

### 3 Ways Of Seeing Invisible Air Flow

- Aufrufe 3,1 Mio.
Vor 11 Monate

### Testing the US Military’s Worst Idea

- Aufrufe 10 Mio.
Vor 11 Monate

### How To Measure The Tiniest Forces In The Universe

- Aufrufe 5 Mio.
Vor 11 Monate

### Inside The Navy's Indoor Ocean

- Aufrufe 25 Mio.
Vor year

### The world depends on a collection of strange items. They're not cheap

- Aufrufe 8 Mio.
Vor year

## KOMMENTARE

## @tysonkemp9170

No point just me

Vor 18 Stunden## @tysonkemp9170

I understand

Vor 18 Stunden## @tysonkemp9170

Life?

Vor 18 Stunden## @tysonkemp9170

Thanks

Vor 18 Stunden## @robwalker4653

Pretty happy with myself that I got 4 using the same method of calculating the circumference of a circle with a radius of 4 and one of 1 and dividing the results.

Vor 18 Stunden## @hosheamichaeladler4006

in addition math don't lie. the answer is 3

Vor 18 Stunden## @jean_yves_plongeur

I don't really know what to think now that I know I will die at 50 because of loneliness 😂

Vor 18 Stunden## @kumarrahul11

Awesome video on SEU. Excellent examples to let people know what SEU can cause.

Vor 18 Stunden## @muh.andianto

so it can be a cool yer practical heavy blunt weapon

Vor 18 Stunden## @harshvardhan7

Mind blown 🎉

Vor 18 Stunden## @Nienormalny

Could laser work as a light source?

Vor 18 Stunden## @wmurd

Obviously wealthy people who have more free time (that they are not spending working) would have a privilege to spend this time on hobby, exercise, friends, new experiences, not necessary study and so on. Also even (“even”) 75k is still kinda a lot? And the mediator analysis study obviously shows that in most(most!) cases money does increase happiness, plus people who have higher income already are already more happy. So their happiness correlated to their income. So yeah, lol, happiness does equal money

Vor 18 Stunden## @jayantaboral6446

What happens if the circle rotates on the other circle not about its centre point but about a point x distance away from its centre

Vor 18 Stunden## @Inkulabi

5:55 💪🏾

Vor 18 Stunden## @wmurd

So did they ever took in consideration to study the white male from harvard and their inherited-money families sample exclusively ? Yeah.

Vor 18 Stunden## @josefsoltes8572

I was tested in psychology course in my bachelors uni programe. I score over 150, but don't know exact number, as that test wasn't designed for such results. And then I dropped out of school, because I failed several exams. So...

Vor 18 Stunden## @Duarte_martins

Great video. The 35kgpp figure doesn’t really pass a sanity check. The landfill must be coming from other sources, not individuals throwing clothes away

Vor 18 Stunden## @royparrish2515

And with the various forces that are causing more and more discord in our lives and relationships, we need to further work against those that work to separate us all

Vor 18 Stunden## @user-rs4rb8xq9i

hi sir i got the correct answer and correct explanation before seeing the explanation

Vor 18 Stunden## @Xcieg

For the longest time, I couldn't understand how energy could not be created or destroyed. Like how can we use energy but it doesnt go away? Then it hit me that for is to exist, entropy is a must. Without it, everything would just heat up until it could no longer function.

Vor 18 Stunden## @lXlDarKSuoLlXl

8:33 glad to know I'm more likely to die without having to smoke half a pack of cigs daily, my budget wouldn't allow it 😂

Vor 18 Stunden## @vladbucur5563

My initial intuition was 4. I was right. My logic was that the center of the small circle has to travel a distance of a cirlce that has a circumference of 4pi times r, with r being the radius of the small circle. So that means 4 revs of the circle :). Of course that option not being in the answers made me question myself, but I'm glad I was right.

Vor 18 Stunden## @EverythingIsLit

Jungreis perfectly articulated what the SAT is all about. He said that he knew the correct answer wasn't listed and so he went with what he figured the *test makers wanted him to answer.* The SAT is about determining what other humans believe the answer is (what's right), and not always about the actual answer (what's true)

Vor 18 Stunden## @Vulcain-we5tw

Openheimer olso made a weapon that killed thousands but did not made fertiliser yet he still got a movie

Vor 18 Stunden## @danjohnson3445

Who cares. Science should be curing disease or eliminating the common cold. Why are we wasting money on this.

Vor 18 Stunden## @sagarvats5347

i get it it happens because the circumference of the coin gets counted twice due to the coins moving together relatively

Vor 19 Stunden## @neilgodwin6531

To suggest that the failure to pass a single exam means you cannot be a "productive citizen" is obscene. My grandfather left school as soon as he could, and became an apprentice, then served in WW1, started his own business in 1920, served in the Home Guard in WW2, invested in property and was a diligent and loyal private landlord for decades. Other in current times have no qualifications but work in care, or for charities, or otherwise work in the community. You don't have to be an academic to serve your fellows or contribute to the wider society

Vor 19 Stunden## @OggyXXXL

1 kg lost 30 micrograms, 1t - 30 grm, 100t - 3 kg, not bad

Vor 19 Stunden## @Boerikoe

Hmm got tricked with the radius, took that as a diameter 🤭

Vor 19 Stunden## @suyashbhardwaj3419

I feel so stupid and intelligent at the same time

Vor 19 Stunden## @Boerikoe

9

Vor 19 Stunden## @jimr5703

I got it right on the test. 3 pi radians per circumference, factor out pi, and 1 vs 3 radians is all that's left. 3 revolutions. Easy.

Vor 19 Stunden## @turonlumpia

This is how you not make short

Vor 19 Stunden## @daviovann

One through infinity, and beyond! LOL!!!!!!!

Vor 19 Stunden## @gangofgreenhorns2672

At least three students got the answer right according to news reports.

Vor 19 Stunden## @JasonMasque13

I’m happy I finally know something Veritasium had to research. Your videos are the best!

Vor 19 Stunden## @madarauhicia6905

So if we made it continuously will it levitat for infinity

Vor 19 Stunden## @iMcWatch

i have no idea what my IQ is. i'm pretty sure we must have done this at school, but we were never told what it is or at the very least neither my parents or school told me what my score was. i'm pretty sure if i did an IQ test now my score would probably be low looking at the snippets of the types of questions in the test. At school i scored very low in maths and if i wanted to do my chosen field I had to have maths above a certain grade and my grade was way tool low. so i retook my school maths and i did a collage maths course at the same time, from what I understand was a level above the school maths, I aced both. my first year at college I was 2 or 3 in my class. same with accounting, i did poorly at school with regards to accounting, yet when i went back to university at age 35 i aced first year accounting. so i don't think i'm below average in intelligence, but just bad at what is used to determine intelligence

Vor 19 Stunden## @evanmidhersand4912

@veritasium Very pleased that you have decided to expand your videos into longer and more elaborate investigations. I have been following you for sometime and you have excellent instinct toward the important questions. I have been studying general relativity, light, geometry and engineering for a few decades now and honestly the fascination never ends. I have come to a few conclusions that were staggeringly elucidating at the time: 1. There is no space empty field 2. Light by which is meant electromagnetism is the true universal inertial frame from which all other elements of the universe can be measured. 3. There are no truly straight lines; nowhere is anything truly purely flat. Euclidean geometry is an ideal just like the holy Grail; Never to be found. What this essentially means is that Euclid has become some sort of ethereal God like figure, from which everything is derived but no where in the real world is Euclid exactly correct. From the above a great many conclusions can be made but my favorites are: A. There is always and everywhere a non-zero “dg/dx” and a non-zero “dg/dt” or “g-dot” ....Where my intent is partial derivatives but I cannot use Greek characters here. And by which “g” is meant Einsteins metric of space time. B. It is physically possible (but very impractical from an engineering standpoint) to build a solar system sized interferometric telescope which could directly view the earths past if located far enough away. A usable wormhole would be needed to send info from one place to the other for this to work. Happy trails and kudos

Vor 19 Stunden## @evanmidhersand4912

Correction: “No space empty of field”

Vor 19 Stunden## @porkster432

A

Vor 19 Stunden## @sumanmajumdar9922

Simply consider the center of the small circle as a point object sitting on a circle with radius 4r(3+1). Now all we have to make a full rotation. Hence 4 full revolutions.

Vor 19 Stunden## @JR-gp2zk

I make very good money and the happiest I ever was, was when I was making minimum wage, always broke and going to college. The only positive about being wealthy is major financial hits hurt less and you can travel to more exotic places. Wealth brings new problems. Health and friends is crazy important. I know millionaires that wish they were healthier and were able to have more true friends.

Vor 19 Stunden## @GillAgainsIsland12

Choice B is RIGHT! You're missing the fact that when circle A is at the top of circle B it only made 3/4 of a complete rotation. This is easily proven by putting a dot on the circumference of circle A at the starting position where it touches circle B, which is on the right side of circle A. When circle A is on the top of circle B the LETTER A appears straight up but the DOT is still on the right side of circle A, which means circle A only made 3/4 of a full turn. The dot can only touch circle B THREE times returning to its starting position because the circumference of the A coin is one third the circumference of the B coin. PERIOD! The College Board blew it by throwing out a perfectly good question.

Vor 19 Stunden## @jishnumaiti4136

When the ball is rotating its instanteneous centre is at B thus the distance of B from A is 4. when we calculate distance travelled by a rotating ball we actually calculate the distance travelled by the centre of the ball about the instanteneous centre . in case of a flat road that centre is the point of contact . now applying s =R(theta) where r= distance of centre from the instanteneous centre . in this case the instanteneous centre is at B so R=3r+r thus R=4r. distance travelled by the centre is 8piR . thus we can clearly see that roations done about a is 4 if we apply s=r(theta) again

Vor 19 Stunden## @jishnumaiti4136

I just thought about this and dont know if this explanation is correct. Also i didnt watch the full video yet :P

Vor 19 Stunden