User DanielSank

146 votes

What is more fundamental, fields or particles?

answered Jul 1, 2014 at 4:24

114 votes

Accepted

Where is the flaw in this machine that decreases the entropy of a closed system?

answered Sep 3, 2015 at 3:40

101 votes

Accepted

Is the Boltzmann constant really that important?

answered Jan 22, 2016 at 7:50

93 votes

Accepted

Did NIST fudge this news story about absolute zero?

answered Jan 18, 2017 at 23:16

91 votes

Accepted

How strong are Wi-Fi signals?

answered May 24, 2019 at 6:15

71 votes

Accepted

Can tin foil hats block anything?

answered Sep 23, 2015 at 2:28

65 votes

Accepted

Are random errors necessarily Gaussian?

answered Apr 19, 2018 at 16:39

43 votes

Accepted

Why is black the best emitter?

answered Jan 17, 2015 at 4:28

38 votes

Accepted

Complex integration by shifting the contour

answered Sep 16, 2014 at 4:41

35 votes

Accepted

If action equals reaction, how is it ever possible to win in martial arts?

answered Sep 28, 2015 at 7:51

30 votes

Accepted

What is the physical interpretation of second quantization?

answered Jun 1, 2015 at 6:38

27 votes

Accepted

Why are band maxima / minima often (always?) at high-symmetry points?

answered Jul 19, 2015 at 15:52

27 votes

Why does public mains power use 50-60 Hz and 100-240 V?

answered Oct 7, 2015 at 18:32

25 votes

Accepted

Why is the partition function divided by $(h^{3N} N!)$?

answered May 20, 2015 at 7:05

24 votes

Accepted

What is a mode?

answered Oct 12, 2015 at 16:42

23 votes

Accepted

Why is the Fourier transform more useful than the Hartley transform in physics?

answered Jan 9, 2016 at 10:51

22 votes

Accepted

What is the "interaction picture" or "rotating frame" in quantum mechanics?

answered Dec 4, 2015 at 2:29

22 votes

Accepted

How does an acoustic guitar amplify its sound?

answered Dec 5, 2014 at 6:13

21 votes

Accepted

When jumping a car battery, why is it better to connect the red/positive cable first?

answered Jan 6, 2017 at 23:09

21 votes

Why can't two different quantum states evolve into the same final state?

answered Sep 28, 2018 at 7:31

19 votes

Schrödinger's cat and the difficulty of macroscopic superposition state

answered Jul 11, 2016 at 13:00

19 votes

Accepted

Which dissipates more power, a small or big resistor?

answered Oct 14, 2014 at 18:47

19 votes

Accepted

Is there a simple way of finding the eigenstates of the creation and annihilation operator in QM?

answered Dec 31, 2014 at 0:11

19 votes

Accepted

Olympiad physics 1996 problem

answered Jan 31, 2015 at 20:15

15 votes

Does bra-ket always assume all space?

answered Jan 27, 2015 at 8:49

15 votes

Accepted

Derive Poisson distribution from probability per time of event

answered Dec 4, 2017 at 21:31

14 votes

Accepted

Dirac Delta and Sloppy Notation

answered Mar 8, 2017 at 10:10

14 votes

Really how can an observable quantity be equal to an operator?

answered Jun 14, 2015 at 20:55

13 votes

Accepted

Definition of the $Q$ factor?

answered Dec 15, 2014 at 3:58

13 votes

Accepted

Why does the air pressure at the surface of the earth exactly equal the weight of the entire air column above it

answered Oct 8, 2014 at 14:14

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206 Answers

What is more fundamental, fields or particles?

Where is the flaw in this machine that decreases the entropy of a closed system?

Is the Boltzmann constant really that important?

Did NIST fudge this news story about absolute zero?

How strong are Wi-Fi signals?

Can tin foil hats block anything?

Are random errors necessarily Gaussian?

Why is black the best emitter?

Complex integration by shifting the contour

If action equals reaction, how is it ever possible to win in martial arts?

What is the physical interpretation of second quantization?

Why are band maxima / minima often (always?) at high-symmetry points?

Why does public mains power use 50-60 Hz and 100-240 V?

Why is the partition function divided by $(h^{3N} N!)$?

What is a mode?

Why is the Fourier transform more useful than the Hartley transform in physics?

What is the "interaction picture" or "rotating frame" in quantum mechanics?

How does an acoustic guitar amplify its sound?

When jumping a car battery, why is it better to connect the red/positive cable first?

Why can't two different quantum states evolve into the same final state?

Schrödinger's cat and the difficulty of macroscopic superposition state

Which dissipates more power, a small or big resistor?

Is there a simple way of finding the eigenstates of the creation and annihilation operator in QM?

Olympiad physics 1996 problem

Does bra-ket always assume all space?

Derive Poisson distribution from probability per time of event

Dirac Delta and Sloppy Notation

Really how can an observable quantity be equal to an operator?

Definition of the $Q$ factor?

Why does the air pressure at the surface of the earth exactly equal the weight of the entire air column above it