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Nov
14
awarded  Popular Question
Nov
10
comment Generating Pink Noise
I think using the gaussian distributed random numbers means your pink noise will also be gaussian distributed.
Nov
9
awarded  Yearling
Nov
6
revised How loud is the thermal motion of air molecules?
added 84 characters in body
Nov
4
comment How loud is the thermal motion of air molecules?
and applying the integral multiplied by an A-weighting curve should give the A-weighted dB SPL
Nov
4
revised How loud is the thermal motion of air molecules?
added 2611 characters in body
Oct
28
comment Why is the charge naming convention wrong?
@tjt263: philosophy.stackexchange.com
Oct
28
comment Why is the charge naming convention wrong?
@VineetMenon Yes, physics creates mathematical models of real things. So if an electron traveling through metal can be modeled as a particle, and a hole traveling through semiconductor can be modeled as a particle, is one more "real" than the other? physics.stackexchange.com/a/15662/176
Oct
28
comment Why is the charge naming convention wrong?
@tjt263 "The electron is a theory that we use; it is so useful in understanding the way nature works that we can almost call it real." - Feynman
Oct
16
comment Does electricity have mass?
So you're asking if the energy stored in the magnetic field increases the mass of an inductor?
Sep
4
awarded  Good Answer
Aug
14
revised Why is the charge naming convention wrong?
add image
Jun
22
revised Would wearing clothing that is black on the inside and white on the outside keep you cooler?
add source
May
24
awarded  Popular Question
May
11
comment Is there a limit to the resolving power of a mirror telescope?
or shaping the mirror with a magnetic field
May
11
revised Would wearing clothing that is black on the inside and white on the outside keep you cooler?
added 434 characters in body
May
2
comment Are small speakers inherently limited to higher frequencies?
Crude illustration: flic.kr/p/spT8rC flic.kr/p/s8tspQ
May
2
comment Are small speakers inherently limited to higher frequencies?
The speakers will all be close together in a single enclosure, and it's a subwoofer, not full-range, so I don't think there will be any more diffraction than that produced by the surface of a large cone. 200 Hz wavelength is 4.4 times the diameter of the cone, 20 Hz wavelength is 45 times.
Apr
28
comment Are small speakers inherently limited to higher frequencies?
"When you try to combine a bunch of small surfaces in different locations to recreate a single wave you end up with a some random interference where the wave is stronger or weaker" I don't understand how a bunch of cones near each other moving in phase with each other at low frequencies would be different from a single large cone. Isn't the main problem that small drivers don't have as much excursion?
Apr
26
comment Is there a limit to the resolving power of a mirror telescope?
"no known technologies to manufacture such a big mirror with the required precision" How about en.wikipedia.org/wiki/Liquid_mirror_space_telescope?