User lemon

187 votes

Accepted

How does a knife cut things at the atomic level?

answered Sep 5, 2014 at 20:15

56 votes

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Why doesn't a cigarette lighter generate thrust?

answered Mar 2, 2015 at 10:31

50 votes

How can a vacuum implode a metal tank?

answered Jul 3, 2016 at 11:14

37 votes

Are today's chip scale atomic clocks accurate enough to conduct my own test of time dilation?

answered Aug 9, 2016 at 6:17

35 votes

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Why do computers generate heat?

answered Sep 27, 2014 at 11:26

35 votes

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Programming in physics

answered May 25, 2015 at 10:46

33 votes

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Does any substance melt or evaporate when cooled at constant pressure?

answered Sep 21, 2016 at 10:48

33 votes

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If electrons were positive and protons were negative, would life be different?

answered Sep 9, 2017 at 5:13

31 votes

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According to the inverse square law, is the intensity at the source always infinity?

answered Aug 20, 2016 at 10:47

26 votes

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Why is the charmed eta meson its own antiparticle, but the neutral kaon is not?

answered Apr 16, 2016 at 7:11

25 votes

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Nuclear bomb power - myth?

answered Jun 11, 2016 at 8:06

23 votes

Isn't the "constant speed of light" postulate valid also for sound waves?

answered Jul 5, 2016 at 8:23

21 votes

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What leads to the existence of critical temperature?

answered Mar 31, 2016 at 10:44

21 votes

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Why is the shadow of a wind turbine a bit slow at first then very quickly, etc. and not equivalent to the wings?

answered May 24, 2015 at 12:19

16 votes

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Perpetual motion machine

answered Feb 23, 2016 at 9:49

16 votes

How is the curl of the electric field possible?

answered Apr 19, 2016 at 19:18

15 votes

What is a flat rotation curve?

answered Sep 6, 2014 at 2:33

14 votes

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What happens to ice cream when you stir it?

answered Sep 13, 2014 at 20:27

14 votes

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Is it possible to disprove water memory with an entropy argument?

answered Feb 22, 2015 at 9:16

14 votes

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Name of device with air capsule inside water

answered Apr 23, 2017 at 10:21

13 votes

Why is pale coloured skin said to absorb more UV?

answered Apr 5, 2015 at 21:45

12 votes

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Dialing emergency numbers with no network available. How?

answered Feb 27, 2015 at 9:08

12 votes

Why can't the LHC detect heavy particles?

answered Sep 24, 2017 at 9:32

10 votes

Units don't match in the torsional spring energy!

answered Mar 21, 2016 at 11:50

10 votes

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How much energy can be extracted by lowering something into a black hole?

answered May 10, 2016 at 10:37

9 votes

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Why can water evaporate?

answered Jul 3, 2016 at 11:29

9 votes

Can two charges with same sign atrract?

answered Jun 27, 2015 at 17:15

8 votes

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How can we see stars and galaxies if photons are travelling straight?

answered Jun 6, 2016 at 11:34

8 votes

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Does a glass of water at room temperature emit (infrared?) radiation

answered Aug 19, 2017 at 9:34

7 votes

Thermodynamic equilibrium

answered Apr 17, 2017 at 14:32

Stack Exchange Network

212 Answers

How does a knife cut things at the atomic level?

Why doesn't a cigarette lighter generate thrust?

How can a vacuum implode a metal tank?

Are today's chip scale atomic clocks accurate enough to conduct my own test of time dilation?

Why do computers generate heat?

Programming in physics

Does any substance melt or evaporate when cooled at constant pressure?

If electrons were positive and protons were negative, would life be different?

According to the inverse square law, is the intensity at the source always infinity?

Why is the charmed eta meson its own antiparticle, but the neutral kaon is not?

Nuclear bomb power - myth?

Isn't the "constant speed of light" postulate valid also for sound waves?

What leads to the existence of critical temperature?

Why is the shadow of a wind turbine a bit slow at first then very quickly, etc. and not equivalent to the wings?

Perpetual motion machine

How is the curl of the electric field possible?

What is a flat rotation curve?

What happens to ice cream when you stir it?

Is it possible to disprove water memory with an entropy argument?

Name of device with air capsule inside water

Why is pale coloured skin said to absorb more UV?

Dialing emergency numbers with no network available. How?

Why can't the LHC detect heavy particles?

Units don't match in the torsional spring energy!

How much energy can be extracted by lowering something into a black hole?

Why can water evaporate?

Can two charges with same sign atrract?

How can we see stars and galaxies if photons are travelling straight?

Does a glass of water at room temperature emit (infrared?) radiation

Thermodynamic equilibrium