User N. Virgo

196 votes

Accepted

Why do sunbeams diverge even though the sun is much more than a few kilometers away?

answered Dec 25, 2014 at 12:22

163 votes

If I drop a ball in an accelerating rocket, will it bounce? If so, how?

answered Mar 19, 2018 at 9:16

131 votes

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Is it necessary to consume energy to perform computation?

answered Jul 7, 2013 at 16:02

72 votes

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Rubber band stretched produces heat and when released absorbs heat.. Why?

answered Feb 22, 2013 at 11:54

70 votes

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What makes running so much less energy-efficient than bicycling?

answered Apr 15, 2013 at 12:24

66 votes

How can anything ever fall into a black hole as seen from an outside observer?

answered Feb 24, 2012 at 22:22

55 votes

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Musical notes and colors of a rainbow

answered Mar 16, 2017 at 8:46

52 votes

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Why isn't temperature measured in Joules?

answered Apr 12, 2013 at 2:51

45 votes

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Can the increase in thickness of a piece of paper which can be folded infinitely surpass the speed of light?

answered May 24, 2018 at 3:37

43 votes

Prove that negative absolute temperatures are actually hotter than positive absolute temperatures

answered Mar 4, 2012 at 16:02

42 votes

Is there a liquid which boils at room temperature and normal pressure, and can we use it to produce electricity?

answered Jun 12, 2022 at 0:25

36 votes

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Quantum random numbers from a laser -- simplest setup?

answered Dec 4, 2014 at 12:48

36 votes

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Is there a thermodynamic limit on how efficiently you can solve a Rubik's cube?

answered Jan 21, 2015 at 11:43

32 votes

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Why don't tuning forks have three prongs?

answered Jan 22, 2013 at 6:52

26 votes

Entropy and Information

answered Aug 24, 2013 at 15:22

25 votes

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Ignorance in statistical mechanics

answered Mar 6, 2012 at 15:40

23 votes

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Polarization of sound

answered Apr 30, 2013 at 7:43

22 votes

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Why is there water coming out of a car’s tail pipe?

answered Feb 14, 2014 at 1:48

21 votes

Are units of angle really dimensionless?

answered Apr 30, 2016 at 5:39

21 votes

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Human as a heat engine

answered Mar 29, 2013 at 5:11

20 votes

Quantum Entanglement - What's the big deal?

answered Feb 26, 2013 at 15:05

20 votes

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Black hole no-hair theorems vs. entropy and surface area

answered May 7, 2012 at 13:10

20 votes

How is $\frac{dQ}{T}$ measure of randomness of system?

answered Aug 3, 2012 at 13:43

19 votes

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Why did my frozen water bottle explode when I opened it after it defrosted a bit?

answered Jul 1, 2012 at 16:34

18 votes

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Information entropy and physics correlation

answered Dec 23, 2017 at 10:41

17 votes

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Why doesn't the percentage of oxygen in Earth's atmosphere diminish significantly with altitude?

answered Aug 20, 2012 at 14:18

17 votes

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Octave equivalence: biological or more?

answered Nov 18, 2012 at 6:49

17 votes

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Entropy Change During Reversible Processes

answered Jan 14, 2013 at 8:35

15 votes

Can sugar be affected by a magnetic field?

answered Nov 30, 2015 at 11:13

14 votes

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Does the scientific community consider the Loschmidt paradox resolved? If so what is the resolution?

answered May 5, 2013 at 12:56

Stack Exchange Network

291 Answers

Why do sunbeams diverge even though the sun is much more than a few kilometers away?

If I drop a ball in an accelerating rocket, will it bounce? If so, how?

Is it necessary to consume energy to perform computation?

Rubber band stretched produces heat and when released absorbs heat.. Why?

What makes running so much less energy-efficient than bicycling?

How can anything ever fall into a black hole as seen from an outside observer?

Musical notes and colors of a rainbow

Why isn't temperature measured in Joules?

Can the increase in thickness of a piece of paper which can be folded infinitely surpass the speed of light?

Prove that negative absolute temperatures are actually hotter than positive absolute temperatures

Is there a liquid which boils at room temperature and normal pressure, and can we use it to produce electricity?

Quantum random numbers from a laser -- simplest setup?

Is there a thermodynamic limit on how efficiently you can solve a Rubik's cube?

Why don't tuning forks have three prongs?

Entropy and Information

Ignorance in statistical mechanics

Polarization of sound

Why is there water coming out of a car’s tail pipe?

Are units of angle really dimensionless?

Human as a heat engine

Quantum Entanglement - What's the big deal?

Black hole no-hair theorems vs. entropy and surface area

How is $\frac{dQ}{T}$ measure of randomness of system?

Why did my frozen water bottle explode when I opened it after it defrosted a bit?

Information entropy and physics correlation

Why doesn't the percentage of oxygen in Earth's atmosphere diminish significantly with altitude?

Octave equivalence: biological or more?

Entropy Change During Reversible Processes

Can sugar be affected by a magnetic field?

Does the scientific community consider the Loschmidt paradox resolved? If so what is the resolution?