750 reputation
311
bio website dropletsforming.blogspot.com
location England, United Kingdom
age 32
visits member for 4 years
seen yesterday

Dec
8
comment Electromagnetic waves should stop while encountering a conducting shell?
I've added a little information on surface plasmon resonance, but if you have more questions, please do post a new question to attract good answers!
Dec
8
revised Electromagnetic waves should stop while encountering a conducting shell?
added 660 characters in body
Nov
28
comment A question about motion and time dilation
@user43783: Congratulations, this is what General Relativity is all about. Begin by remembering that there is no absolute position, and no absolute time.
Nov
28
answered How does air in a water balloon act in space?
Nov
25
comment Why does iron sink in molten iron instead of floating?
I think your densities are wrong. At present you have a higher density of ice at 0 C, which would make it sink.
Nov
25
answered Electromagnetic waves should stop while encountering a conducting shell?
Oct
1
answered Correct approach for calculating excited states of circular quantum dot under effective mass approximation
Sep
30
awarded  Explainer
Sep
30
revised Correct approach for calculating excited states of circular quantum dot under effective mass approximation
Added paper name, authors etc, made a more specific title
Sep
30
comment Correct approach for calculating excited states of circular quantum dot under effective mass approximation
I've added the equation, explanation, paper details and fixed the title so that people can see what it's about.
Sep
30
suggested approved edit on Correct approach for calculating excited states of circular quantum dot under effective mass approximation
Sep
15
comment How does an electron move around in an orbital? Is it “wave-like” or random?
FYI, calculating the surface within which there is 90% probability is actually quite challenging unless the orbital is really simple and analytic. So usually what is plotted is just an isosurface on which the probability density is at a given figure, because that's much easier.
Aug
5
answered Differences between probability density and expectation value of position
Aug
5
answered What exactly is meant by “observed” when talking about the wave-particle duality?
Jul
23
awarded  Yearling
Jul
23
comment Is speed of light and sound rational or irrational in nature?
Regarding rationality of numbers in measurement, David Z's answer is spot on. If you are trying to grasp whether the universe prefers integers, then yes it does. Things like the resonance frequencies of strings are in strict integral relationships (f, 2f, 3f, 4f). Quantum physics is also based on integers; the idea of quanta itself is that nature is lumpy rather than continuous.
Jul
10
comment Classic home experiments for an 8-year-old child
Exactly. That's one of the things that I feel makes for a good learning experiment; there is space for multiple hypotheses, and people usually get it wrong the first time. I remember being sure it would miss, partly because it seemed impossible to hit it every time. Ping. Clatter. Gasp!
Jul
9
comment Classic home experiments for an 8-year-old child
Yes. The narrative is intended to point out that the gun is pointed directly at Kiki. The usual intuition mistake is to assume that bullets do not fall like any other projectile, or to ignore it. The set-up with the monkey letting go as the gun fires is supplying a separation of the motion vector. Clearly for a real gun to function correctly, its targets must compensate for the motion of the bullet.
Jul
9
comment Would a craft travelling increasingly close to the speed of light appear to be decelerating?
True, and this is the basis of many 'paradox' explanation articles. The question, however, was how it would appear to an observer, not to the traveller. To the observer watching someone accelerate near c, it is still an acceleration. Just because you move at some speed relative to me, it does not change my experience of time.
Jul
8
answered Would a craft travelling increasingly close to the speed of light appear to be decelerating?