Physics
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S. McGrew
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872 Answers

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68
Why don’t astronauts “push” spacecraft?
May 31 '20 at 3:10
63
If a photon truly goes through both slits (at the same time), then why can't we detect it at both slits (at the same time)?
Nov 16 '19 at 22:51
60
If electrons are identical and indistinguishable, how can we say current is the movement of electrons?
Jun 4 '20 at 19:36
58
How do I experimentally measure the surface area of a rock?
Nov 9 '19 at 14:55
52
Could there theoretically exist a material so light, that it can levitate in the air just due to the in height decreasing air pressure?
Mar 9 '20 at 21:35
50
Why does my tea periodically alternate its rotational speed after stirring? (Link to video below)
Feb 4 '20 at 14:14
46
How are overtones produced by plucking a string?
Sep 18 '18 at 18:32
42
If a jet engine is bolted to the equator, does the Earth speed up?
Jan 17 at 22:49
42
Is force due to electric field instantaneous? If not then why?
Jun 1 '18 at 14:05
37
What happens when the drag force exceeds the weight of an object falling into earth?
May 7 '19 at 2:33
33
Does it make sense to say that something is almost infinite? If yes, then why?
Jun 10 '20 at 16:05
26
What is physically different about a moving vs still object in space?
Dec 30 '18 at 23:29
23
Is the photon pair generated from the electron-positron annihilation entangled?
Nov 19 '18 at 11:40
20
Is there an equivalent of computation of physical processes in nature?
Aug 3 '20 at 2:28
20
How exactly does artificial gravity work?
May 12 '19 at 2:37
17
What actually is white light?
Jan 7 at 15:31
12
Could you use a laser beam as a modulated carrier wave for radio signal?
Apr 1 '19 at 14:05
11
How would a fast-moving atom interact with a body?
Jan 9 '19 at 17:16
11
Superconductive magnet as a source of energy?
Dec 27 '18 at 1:16
11
How can iron be forged by a hand-powered hammer?
Jul 24 '18 at 13:27
10
Ground → ship Wi-Fi bandwidth in my fast moving spaceship
Nov 19 '19 at 18:26
10
Siphon water from washing machine into sink next to it
Jan 1 '19 at 19:06
10
Can we see emission lines in stars?
Nov 5 '18 at 5:47
9
What is happening when magnetic field lines snap or break?
Jun 16 '20 at 13:14
9
Only sea water appears blue in color, why this is not happening in river water?
Aug 16 '18 at 19:50
8
Why a falling object has a constant acceleration?
Feb 28 at 1:42
8
Can Schrödinger's cat be filmed?
Sep 16 '20 at 23:59
8
Can light beams (e.g. from a laser) visibly interfere if they cross in mid-air?
Jun 25 '19 at 1:07
8
Physics of a punch
Jan 10 '19 at 4:20
8
Why don't marbles naturally arrange themselves like a crystal?
Nov 25 '18 at 12:51
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