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Can you call a cell phone in the microwave?

Can you call a cell phone in the microwave?

Season 1 Episode 20
7:05
How does laser cooling work?

How does laser cooling work?

Season 1 Episode 21
5:27
Could you replace your eye with a camera?

Could you replace your eye with a camera?

Season 1 Episode 22
5:37
How science explains monster waves

How science explains monster waves

Season 1 Episode 23
5:49
Bizarre spinning toys

Bizarre spinning toys

Season 1 Episode 24
4:56
How SMOOTHNESS of a SOCCER BALL affects curve

How SMOOTHNESS of a SOCCER BALL affects curve

Season 1 Episode 25
5:44
World's Easiest DIY Electric Train

World's Easiest DIY Electric Train

Season 1 Episode 26
5:44
Exploding soda cans with electromagnets in SLOW MOTION ft Joe Hanson

Exploding soda cans with electromagnets in SLOW MOTION ft Joe Hanson

Season 1 Episode 27
7:55
Should you go to Mars? ft Bill Nye

Should you go to Mars? ft Bill Nye

Season 1 Episode 28
9:04
How to shrink a quarter with electricity

How to shrink a quarter with electricity

Season 1 Episode 29
7:48
Can you solve this pier puzzle?

Can you solve this pier puzzle?

Season 1 Episode 30
4:58
What are antibubbles?

What are antibubbles?

Season 1 Episode 31
6:11
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Physics Girl

Is energy always conserved?

Season 1 Episode 19

When light passes through the universe and is redshifted by the expansion of space itself, how is energy conserved? The stretched light has a longer wavelength and therefore a lower energy. Is energy conserved? If so, where does it go?
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