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Physics
G. Smith
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734 Answers

Newest Activity Votes
74
How is water heavier than petrol, even though its molecular weight is less than petrol?
Jun 3 at 5:07
57
Do photons bend spacetime or not?
May 22 at 2:48
52
Why don't merging black holes disprove the no-hair theorem?
Feb 10 at 23:55
49
Can an object tethered to a spaceship be pulled out of event horizon?
Aug 27 at 18:55
48
If visible light has more energy than microwaves, why isn't visible light dangerous?
Jan 7 at 5:14
46
Why isn't the GPS location calculated from the Schwarzschild metric?
Nov 21 '18 at 4:56
38
Is fission/fusion to iron the most efficient way to convert mass to energy?
Jun 11 at 1:47
35
What percentage of the mass/energy of the universe is in the form of electromagnetic waves?
Sep 2 at 4:06
35
Why can’t you see at the start of the Big Bang?
May 6 at 1:34
26
Why is quantum gravity non-renormalizable?
Jun 30 at 4:06
24
Why is the Sun made of light elements only?
May 9 at 17:01
24
Why doesn't increasing the temperature of something like wood or paper set them on fire?
May 5 at 20:25
23
Why don't electromagnetic waves interact with each other?
Apr 7 at 0:26
23
Is there a way to calculate the time taken by a falling object to reach terminal velocity?
Nov 6 '18 at 17:20
19
Do we or do we not observe (measure) superpositions all the time?
Jun 23 at 7:19
19
Is there an electric dipole moment in an electron?
Nov 17 '18 at 16:48
18
Do variations of the Earth's magnetic field affect gravitational acceleration at Earth's surface, and if yes, by how much?
Feb 11 at 6:46
17
Is a single radon-daughter atom in air, such as ${}^{218}\text{Po}$, a solid?
Jun 18 at 16:53
17
Is electric current relative?
Dec 16 '18 at 17:55
15
What is the most precise physical measurement ever performed?
Aug 16 at 5:01
15
What *exactly* is electrical current, voltage, and resistance?
Apr 23 at 1:26
14
What happens when a long-wavelength photon “hits” a small black hole?
Sep 5 at 4:35
14
0-rank tensor vs vector in 1D
Mar 30 at 20:21
13
Is dark matter inside galaxies different from dark matter in intergalactic space?
Oct 18 at 17:08
13
What happens if you dump antimatter into a black hole?
May 1 at 20:16
12
What examples are there of unrelated physical quantities measured in the same units?
Oct 17 at 17:26
12
Combining two Lorentz boosts
May 16 at 16:36
11
What is the temperature of the black night sky, outside the atmosphere?
Apr 30 at 20:11
11
Can visible light be affected by magnetism?
Dec 24 '18 at 18:38
11
Difficulty of numerically solving Einstein equations
Nov 28 '18 at 4:06
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