How Much Does a Shadow Weigh?

Veritasium SLINKY video: http://bit.ly/SGD73o
Veritasium channel... SUBSCRIBE: http://bit.ly/RoMMH7
A great Veritasium episode about using video to teach: http://bit.ly/VOsZVx

Vsauce2 LEANBACK about shadows: http://bit.ly/VOt8rP

Vsauce3 explains how realistic SimCity is... SUBSCRIBE: http://bit.ly/PMThlp

ALL MUSIC BY: http://www.soundcloud.com/JakeChudnow
Jake's YouTube channel: https://www.youtube.com/jakechudnow

Vsauce on Twitter (lots of extra mindblows): http://www.Twitter.com/TweetSauce
Vsauce on Facebook (your chance to blow MY MIND): http://www.Facebook.com/VsauceGaming

Hand shadow book: http://books.google.co.uk/books/about...

Light "pushes" us: http://www.straightdope.com/columns/r...

Solar Sail: http://www.jspec.jaxa.jp/e/activity/i...

solar sail GIF: http://www.jspec.jaxa.jp/e/activity/i...

Venutian Shadows: http://www.digitalsky.org.uk/venus/sh...

Speed of light in different materials: http://cadlab6.mit.edu/2.009.wiki/anc...

sonic boom demonstration: http://demonstrations.wolfram.com/Wav...

Cherenkov radiation: http://profmattstrassler.com/articles...

and: http://en.wikipedia.org/wiki/Cherenko...

Photonic booms in your eyes: http://en.wikipedia.org/wiki/Cosmic_r...

Pushing a lightyear-long object: http://www.physicsforums.com/showthre...

compression / longitudinal waves: http://en.wikipedia.org/wiki/Longitud...

cool site for putting things in perspective (this link is for 1 sq. inch): http://www.bluebulbprojects.com/measu...

Also this is important: http://animalsbeingdicks.com/post/231...

• Category

  Science & Technology

[Bizzy Loveya]

This comment won in so many ways.

[Joel Nepomuceno]

I just asked about the pronunciation, not the meaning. Anyway, thank you... I guess...

[gregski55]

what is outside the universe

[Aimbawt]

the pronunciation is the same.

[Samuel Russel]

theres no diff

[DrMythology]

Well English could be like his 2nd, 3rd, or even 5th language so in this regard your comment is invalid. Although i'm pretty sure English is his first language rendering my comment even more *invalider* (hint this isn't a legit word), but correcting an online stranger comment just to annoy him/her is kinda dull, boring, uncreative and cheap don't you think?

[Srinag Rao]

you never answered the Q in the title!

[Thalles A]

And as always... Thanks for blowing my mind. Didn't knnow the thing about the push and the speed of sound.

[TheCerealkiller148]

Hey vsauce, if you were at the edge of the universe and going faster than the universe is expanding, could you theoratically exit the universe?

[Skywalker1616]

No difference at all

Weigh [wei]

Way [wei]

[2002JGGICE]

There is no different pronunciation but there are different meanings