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DanielSank's user avatar
DanielSank's user avatar
DanielSank
  • Member for 8 years, 11 months
  • Last seen this week
138 votes

What is more fundamental, fields or particles?

112 votes
Accepted

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

93 votes
Accepted

Did NIST fudge this news story about absolute zero?

91 votes
Accepted

How strong are Wi-Fi signals?

90 votes
Accepted

Is the Boltzmann constant really that important?

71 votes
Accepted

Can tin foil hats block anything?

65 votes
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Are random errors necessarily Gaussian?

42 votes
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Why is black the best emitter?

37 votes
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Complex integration by shifting the contour

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

29 votes
Accepted

What is the physical interpretation of second quantization?

27 votes

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

25 votes
Accepted

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

24 votes
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What is a mode?

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

21 votes

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

21 votes
Accepted

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

21 votes
Accepted

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

19 votes
Accepted

Olympiad physics 1996 problem

19 votes
Accepted

Which dissipates more power, a small or big resistor?

19 votes
Accepted

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

17 votes
Accepted

How does an acoustic guitar amplify its sound?

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

17 votes

Schrödinger's cat and the difficulty of macroscopic superposition state

15 votes

Does bra-ket always assume all space?

14 votes
Accepted

Derive Poisson distribution from probability per time of event

13 votes
Accepted

Dirac Delta and Sloppy Notation

13 votes

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

12 votes

How does uncertainty/error propagate with differentiation?

12 votes
Accepted

Definition of the $Q$ factor?

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