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5h
reviewed Edit suggested edit on Solution to a kinetic temperature problem
5h
revised Solution to a kinetic temperature problem
TeX editting. This may need some moderation.
1d
comment Is there an intuitive explanation for why Lorentz force is perpendicular to a particle's velocity and the magnetic field?
@RobJeffries, Nice! Thanks for the info. "Nulling" set-ups are very attractive; er, well, you know what I mean...
2d
reviewed Approve suggested edit on What does the colour of a light bulb depend on?
Oct
28
revised Perceived acceleration in an artificially modulated gravitational field
added argument
Oct
28
reviewed Approve suggested edit on Symmetric potential and the commutator of parity and hamiltonian
Oct
28
comment Perceived acceleration in an artificially modulated gravitational field
@Hypnosifl, I think the thing about tidal forces is you need (at least) two particles separated in space-time, and the tidal forces decrease with the separation. (That's why I specified a "test particle".) You're right that the proverbial astronaut falling into a black hole will be spaghetti-fied.
Oct
28
answered Perceived acceleration in an artificially modulated gravitational field
Oct
28
answered Derivation of magnetic vector potential
Oct
28
comment Perceived acceleration in an artificially modulated gravitational field
@DavidHammen, more's the pity. It seems like one of those things that just ought to be true (imho).
Oct
28
comment Perceived acceleration in an artificially modulated gravitational field
Mach's principle!
Oct
27
comment Derivation of magnetic vector potential
Could you define beta?
Oct
27
reviewed Approve suggested edit on How many atoms exist within a continuum body?
Oct
27
comment Reading the Feynman lectures in 2012
@Physikslover, I'm not recommending Mead's monograph; as Ron Maimon mentioned, it wasn't particularly successful. I think the point was to "motivate" Maxwell's equations by showing how they emerge from something simpler. (Ron Maimon may have a different perspective; my default posture is to defer to him!)
Oct
27
reviewed Approve suggested edit on How many atoms exist within a continuum body?
Oct
27
reviewed Approve suggested edit on How would one detect antihydrogen in the universe?
Oct
26
comment what could generate a high-pitched whine in electronics where the frequency depends on the current?
@user6972, ok, got it.
Oct
26
reviewed Reject suggested edit on Advanced Gravitational Waves?
Oct
24
comment what could generate a high-pitched whine in electronics where the frequency depends on the current?
@user6972, I concur about power supply switching frequencies in general; it all depends on the supply. However, high voltage supplies tend to run at lower frequencies because of the high effective capacitances presented by the high voltage transformer. Moreover: 1) I claim magnetostriction as part of the power supply, since the transformer is an element in it. 2) a steady sound usually requires a driving signal at the same or a related frequency, so just saying "magnetostriction" without identifying an underlying frequency source is not an answer, imho.
Oct
24
comment Physical explanation for capacitive circuit
@IncnisMrsi, I take your point that my answer could be elaborated. Would you care to add an answer that does so?