3,811 reputation
310
bio website
location Southern California
age
visits member for 3 years, 9 months
seen Apr 1 '13 at 20:16

I am a moderately successful television actor who once pursued graduate studies in theoretical physics.


Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Jan
27
awarded  Yearling
Mar
8
answered All mirrors always shrink to 50% scale?
Feb
28
answered Why is visible light used in Optical fibers (instead of other EM waves)?
Feb
2
answered For an isolated system, can the entropy decrease or increase?
Jan
27
awarded  Yearling
Jan
26
comment Quantum Computing Power Advantages
Even classically, a computation does not have to generate entropy. Look up reversible computation. Feynman wrote about it in his lectures on computation in the 80s.
Jan
17
comment Reflection of sound waves
Sound wave propagating in tube will actually be slightly slower than sound wave in open space, so you could use the slow -> fast transition example.
Jan
17
comment Reflection of sound waves
The Hard vs. Soft boundaries in that link are the better analogy.
Jan
17
answered Reflection of sound waves
Jan
17
comment Does a scale model with 1/2 the linear length have 1/8 the mass?
Read the comment thread below the original question.
Jan
16
answered Does a scale model with 1/2 the linear length have 1/8 the mass?
Jan
15
comment Does a scale model with 1/2 the linear length have 1/8 the mass?
If you just want to know, for example, the max deceleration before the back wheels come up, you could scale the mass however you wanted, since inertial and graviational forces both scale the same way with m. You need to write down all the pertinent equations and see how things scale.
Jan
15
comment Does a scale model with 1/2 the linear length have 1/8 the mass?
What is the purpose of your model? If it is just to look at, then the mass is irrelevant. If it is for some sort of test or simulation purposes, then it is a more complicated question. There's no a priori reason a model should have the same volumetric mass density.
Jan
15
comment How can two seas not mix?
FYI the boundary between salty and fresh water is often called a halocline. They can be quite pronounced in sufficiently calm bodies of water.
Jan
15
answered Why does smoke go out the window of the car - and what if there's wind blowing instead of the car moving?
Nov
26
comment Application of diffraction problem!
"Refraction" is the word you want to use, not "diffraction".
Oct
23
awarded  Nice Answer
Oct
15
comment Using eigenvalues to determine the stability/behaviour of the system
That doesn't look like the equation for a pendulum. Where's the restoring force?