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Apr
21
awarded  Good Answer
Apr
20
comment Is perfectly diffuse reflection entropy maximizing?
Hi Carl, is it possible to be more precise? We do not spread the light out evenly among all solid angles; instead the intensity per unit solid angle obeys Lambert's law.
Apr
20
asked Is perfectly diffuse reflection entropy maximizing?
Apr
18
awarded  Good Answer
Apr
17
revised How does the particle in the double slit experiment interact with the slits?
edited title
Apr
1
comment Why does the atmosphere rotate along with the earth?
Sorry, I don't understand what the pronoun "it" is referring to in your question.
Mar
21
comment Why can't a rope be pulled completely straight?
When the rope is straight, you can pull the middle down without the side weights going up to first order. When the rope is not straight, the side weights will have a first-order rise when you pull the middle down further. The bottom of the hill is where steps do not change your height to first order. I don't know what statistical terms you want defined.
Mar
13
awarded  Nice Question
Mar
12
awarded  Notable Question
Mar
9
awarded  Popular Question
Mar
8
comment Which direction will the yoyo move?
That assumption is fine where it is. The yoyo moves because there is nothing to stop it from rolling and lowering its potential energy.
Feb
22
awarded  Popular Question
Feb
15
awarded  Enlightened
Feb
15
awarded  Nice Answer
Feb
14
revised Black Body Golf Balls
added 3 characters in body
Jan
28
awarded  Nice Answer
Jan
20
awarded  Stellar Question
Jan
18
comment How does the height reached by a projectile of given flight time depend on air resistance?
Very nice writeup, thank you, Floris.
Jan
18
comment How does the height reached by a projectile of given flight time depend on air resistance?
I was curious whether 1) someone might find an heuristic argument that works in not only the limiting case of very thick air 2) whether it's possible that the answer depends on the parameters, e.g. overestimates for some initial conditions and underestimates for others 3) whether the result is only true for v^2 drag, or whether other models of air drag (drag coefficient depends on v, ball is spinning) have different results.
Jan
18
asked How does the height reached by a projectile of given flight time depend on air resistance?