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visits member for 2 years, 2 months
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Sep
28
comment Do Monte-Carlo updates have a physical significance in stat. mech?
From my very limited experience I think this is an archetypical question and the answer (in general, though specific cases can have real dynamical significance) is no. The goal of detailed balance and ergodicity is to let you get uncorrelated and unbiased samples of your configuration space. That's it.
Sep
24
awarded  Autobiographer
Sep
23
comment What is the mathematical equation for a sine wave?
If someone asked me to give the equation of a sine curve, I would write $\sin(x)$. If someone asked me to describe sinusoidal motion, I would give the equation $A \sin(\omega x+\varphi )$. I think this is a pretty standard way of looking at things (the wiki article does clarify by saying "or sinusoid"). By virtue of the angle addition identities, sinusoidal motion can also be described as $A \cos(\omega x+\varphi)$ or $A \sin(\omega x)+B \cos(\omega x)$, with any replacement of $+$ with $-$ that you want. So if you see these equations they're equivalent to the wikipedia article.
Sep
19
answered Is a causal relationship implied by Newton's 2nd Law?
Sep
14
comment Why Do My Fan Blades Produce Color When They Spin?
@CuriousOne To check that I understand you, would the period of the color cycle correspond to the AC current period passed through it? (If the UV source was constant over time everything should average out)
Sep
14
answered Could $\int (\ddot\phi + \mu\dot\phi^2)d\phi$ ever be negative? How to show it?
Sep
11
revised How to reconcile these two approximations?
added 2 characters in body
Sep
11
answered How to reconcile these two approximations?
Sep
11
asked How to reconcile these two approximations?
Sep
8
awarded  Yearling
Aug
21
answered Kinematic sign convention
Aug
5
awarded  Good Answer
Jul
27
comment How was Newton able to guess that gravitational force is inversely proportional to distance squared?
@BrandonEnright which basic assumptions are you talking about?
Jul
27
revised How was Newton able to guess that gravitational force is inversely proportional to distance squared?
added 602 characters in body
Jul
27
answered How was Newton able to guess that gravitational force is inversely proportional to distance squared?
Jul
22
comment Is a falling, perfect sheet of fluid possible to create?
@M.Herzkamp, I've only seen/heard of liquids in a vacuum on this: youtube.com/watch?v=8F4i9M3y0ew
Jul
19
answered Relativity of Simultaniety
Jul
18
comment How to solve the Laplace Equation in the hollow square region?
There are a lot of examples in, for example, Griffiths intro to electrodynamics ch. 3, where there's a discontinuity in the potential at the corners but a convergent solution exists.
Jul
18
comment Do Electromagnetic Waves really propagate through continuous Induction?
I think this is false, in the concrete sense that if you put a stationary electron in the path of an EM-wave, it would accelerate.
Jul
15
comment Can we measure rates in real time?
@BrysonS. But the two measurements can guarantee an exact velocity at some point in time within an interval. That's pretty good, and is contrary to the second sentence of your third paragraph.