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seen Jul 27 at 19:58

Apr
5
asked Is the change in kinetic energy of a particle frame independent?
Dec
27
answered Why doesn't an electron accelerate in a circuit?
Dec
24
comment How do I join two co-axial cables?
@David you've too much Christmas goodwill because this has no physics content whatsoever and should be migrated to electronics stack exchange ;)
Nov
26
comment Why does the earth rotate?
@adam the probability of a variable taking some value in a continuous range of random values is zero.
Nov
24
comment Why does the earth rotate?
@bedsham the probability of an angular velocity being within a range of values isn't distributed uniformly, but the probability of it being a certain value is still zero.
Nov
24
comment Why does the earth rotate?
@Adam a body not rotating is a unique state that is easily identified, whereas the Earth's particular rotation isn't. It's equivalent to asking why everything in the universe doesn't rotate at the same angular velocity as the Earth.
Nov
23
awarded  Quorum
Nov
22
awarded  Critic
Nov
22
comment Is PHD in Theoretical Physics(Quantum Mechanics) on my own possible?
@dmckee Einstein was hired as a technical assistant, level III on June 23, 1902. On 30 April 1905, he completed his thesis, with Alfred Kleiner, Professor of Experimental Physics, serving as pro-forma advisor
Nov
22
answered Why does the earth rotate?
Nov
20
comment Problems that Lagranges equations of the 1st kind can solve whereas the 2nd kind can't?
Nice answer, but this seems to be all about Lagrange's equations of the second kind.
Nov
20
comment Is PHD in Theoretical Physics(Quantum Mechanics) on my own possible?
Einstein got his PhD working on his owm as a patent clerk but of course he was Einstein ;) I think you'd have to be exceptionally bright to even do this full time on your own, never mind while holding down a full time job as well. There's is also the mental climate provided by your colleagues which makes the job easier as well, but which some take for granted.
Nov
20
revised Problems that Lagranges equations of the 1st kind can solve whereas the 2nd kind can't?
added 100 characters in body
Nov
19
asked Problems that Lagranges equations of the 1st kind can solve whereas the 2nd kind can't?
Nov
17
comment Time, what is it?
@JGWeissman The Amondawa people of Brazil don't have a concept of time as developed as in west, so I would explain to them, using what's available from their culture, the idea of at the same location: 1. Two things happening together, 2. One thing happening after another, 3. One thing happening before another. Having got this, I would show how things happening can be ordered further by assigning a symbol to each happening which is called allocating a point in time. How successful I am depends upon mine and their intellect and how sophisticated their culture is.
Nov
17
comment Time, what is it?
There's a lot of innane jibbering in this answer; couldn't you cut it down a bit?
Nov
16
answered Time, what is it?
Nov
14
accepted Is Einstein's 1916 General Relativity paper a recommended way to start learning about the subject?
Nov
12
accepted Is (0,0,0) an undefined vector?
Nov
11
asked Is (0,0,0) an undefined vector?