User mmesser314

111 votes

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Can we theoretically balance a perfectly symmetrical pencil on its one-atom tip?

answered Apr 14, 2015 at 2:18

87 votes

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Why can't I do this to get infinite energy?

answered Apr 26, 2015 at 3:20

72 votes

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Is it correct to say that it is theoretically impossible for perfect rigid bodies to exist?

answered May 26, 2022 at 5:05

70 votes

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How can a red light photon be different from a blue light photon?

answered Mar 31, 2020 at 1:38

47 votes

Will a propeller work in a superfluid?

answered Feb 10, 2017 at 14:05

41 votes

How is energy "stored in an electric field"?

answered Jun 21, 2022 at 14:16

32 votes

Ball hits curve of same curvature

answered Dec 6, 2019 at 3:14

30 votes

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Why is the force exerted by a light beam on a spherical object independent of the amount of light reflected or absorbed?

answered Mar 15, 2020 at 5:32

30 votes

If we repeatedly divide a colorful solid in half, at what point will the color disappear?

answered May 8, 2021 at 5:57

28 votes

If electric field inside a conductor is always zero, then why do free electrons move?

answered Mar 12 at 15:06

26 votes

How thick in diameter is the average lightning bolt visually?

answered May 24 at 19:48

25 votes

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How do telescopes see many billion light years distant object in our universe?

answered Apr 7 at 15:22

25 votes

Why does twisting a cork make it easier to remove from a bottle?

answered Jul 26, 2021 at 14:02

24 votes

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Are neurons more energy efficient than transistors?

answered Oct 20, 2021 at 3:11

24 votes

Why doesn't an electron ever hit (and stick on) a proton?

answered Feb 22, 2016 at 6:54

24 votes

Why is force a vector?

answered Dec 4, 2017 at 3:42

23 votes

Have we directly observed the electric component to EM waves?

answered Apr 17, 2017 at 4:55

21 votes

Can you actually stand inside a rainbow? I see people claiming you can

answered Jun 30, 2022 at 23:20

20 votes

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What is Gray, from a physics POV?

answered Jun 13, 2017 at 14:28

20 votes

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Why does diamond have lower tensile strength than Iron?

answered Mar 10, 2014 at 13:10

20 votes

Since the microwave background radiation came into being before stars, shouldn't all existing stars (given sufficient equipment) be visible?

answered Apr 1, 2021 at 0:13

19 votes

Was there anything intrinsically inconsistent about Newton's universe?

answered Jan 5, 2021 at 1:33

19 votes

Elliptical Trajectory, or Parabolic?

answered Dec 8, 2017 at 4:43

19 votes

Would we even notice the merger with the Andromeda Galaxy?

answered Jul 4, 2021 at 0:41

18 votes

What shape the Earth would have to be for an object in free fall to follow a straight line trajectory?

answered Oct 21, 2021 at 21:48

18 votes

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In what sense the laser radiation is monochromatic?

answered Mar 12 at 16:27

18 votes

Does the collapse of the wave function happen immediately everywhere?

answered Mar 19, 2021 at 5:48

18 votes

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Magnetic field loops do not knot or link

answered Dec 25, 2020 at 5:12

17 votes

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Why is it impossible to measure position and momentum at the same time with arbitrary precision?

answered Dec 11, 2020 at 23:23

17 votes

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A photon travels in a vacuum from A to B to C. From the point of view of the photon, are A, B, and C at the same location in space and time?

answered Feb 7, 2021 at 2:40

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1,167 Answers

Can we theoretically balance a perfectly symmetrical pencil on its one-atom tip?

Why can't I do this to get infinite energy?

Is it correct to say that it is theoretically impossible for perfect rigid bodies to exist?

How can a red light photon be different from a blue light photon?

Will a propeller work in a superfluid?

How is energy "stored in an electric field"?

Ball hits curve of same curvature

Why is the force exerted by a light beam on a spherical object independent of the amount of light reflected or absorbed?

If we repeatedly divide a colorful solid in half, at what point will the color disappear?

If electric field inside a conductor is always zero, then why do free electrons move?

How thick in diameter is the average lightning bolt visually?

How do telescopes see many billion light years distant object in our universe?

Why does twisting a cork make it easier to remove from a bottle?

Are neurons more energy efficient than transistors?

Why doesn't an electron ever hit (and stick on) a proton?

Why is force a vector?

Have we directly observed the electric component to EM waves?

Can you actually stand inside a rainbow? I see people claiming you can

What is Gray, from a physics POV?

Why does diamond have lower tensile strength than Iron?

Since the microwave background radiation came into being before stars, shouldn't all existing stars (given sufficient equipment) be visible?

Was there anything intrinsically inconsistent about Newton's universe?

Elliptical Trajectory, or Parabolic?

Would we even notice the merger with the Andromeda Galaxy?

What shape the Earth would have to be for an object in free fall to follow a straight line trajectory?

In what sense the laser radiation is monochromatic?

Does the collapse of the wave function happen immediately everywhere?

Magnetic field loops do not knot or link

Why is it impossible to measure position and momentum at the same time with arbitrary precision?

A photon travels in a vacuum from A to B to C. From the point of view of the photon, are A, B, and C at the same location in space and time?