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How Much Does a Shadow Weigh?

submitted by pumkinandstorm

1 decade 2 years 2 months 1 week ago

Science

I love Vsauce videos and this is no exception!

11 Comments

The Shadow knows!

Come on, light! Get off your arse. Getting slowed by a bit of atmosphere... pfft

I recommend the spring videos from Veritasium. Going through all the Veritasium and VSause videos is pretty fun stuff...lots of google fodder. Much better for your brain than politics!

upvote for PHOTONIC BOOM!
suddenly Street Fighter II makes a lot more sense.

Woah...mind blown (twice). I mean, I knew that light was slower in air, but ~1M m/s slower? Crazy...

And the "speed of push" being the speed of sound? Love these types of videos...

these videos are great. Entertainment and education in one neat package. Love it

*promote the c!

Promoting this video back to the front page; last published Monday, October 8th, 2012 8:03am PDT - promote requested by bareboards2.

>> ^Tokoki:

Woah...mind blown (twice). I mean, I knew that light was slower in air, but ~1M m/s slower? Crazy...
And the "speed of push" being the speed of sound? Love these types of videos...

Ya, I have known forever that sound traveled in water faster than air...but I didn't think of the larger implications of what this meant in reality. And just like light, there is a formula for calculating the speed of sound in objects, which by conscience is also the speed of change in the object, something I never placed in the same realm before (sound was related to motion in my mind, but in reality sound IS MOTION).

Tags for this video have been changed from 'shadow, weigh, how much, vsauce, light, energy, surface, weight' to 'shadow, weigh, how much, vsauce, light, energy, surface, weight, photonic boom' - edited by messenger

Push is slower than the speed of light.
And light can push.
Can you push light?

Discuss...

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