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Oct
8
comment Understanding basic quantum mechanics notation
@Danu the only thing that I know about Hilbert space is that it is a generalization of the euclidean space.. Doing bra and ket on O is equal to doing a matrix product? Thanks for your help!
Oct
8
revised Understanding basic quantum mechanics notation
deleted 1 character in body
Oct
8
comment Understanding basic quantum mechanics notation
which is the algebric meaning of doing bra and ket on the middle term? what is the middle term (the term between | and |)? a matrix? what do I get in the end? the value of energy due to the magnetic effect?
Oct
8
asked Understanding basic quantum mechanics notation
Feb
28
awarded  Popular Question
Nov
15
comment How long does it take for a metal to reach equilibrium?
@CarlWitthoft what about conduction?
Nov
15
comment How long does it take for a metal to reach equilibrium?
@JohnRennie when the inner eletric field is zero.
Nov
15
comment How long does it take for a metal to reach equilibrium?
Could you just give me some examples? I haven't enough physical and mathematical skills, I just want a rough approximation :)
Nov
15
asked How long does it take for a metal to reach equilibrium?
Jun
13
accepted Do plastic shoes electrically insulate people from the ground?
Jun
13
accepted Not working brakes: just another energy conservation problem
Jun
13
asked LINAC: why are they being accelerated?
Dec
22
comment Do plastic shoes electrically insulate people from the ground?
Thanks a lot for your exhaustive answer but does it mean that using appliances I accumulate charges in my body when I dress plastic shoes? :)
Dec
20
asked Do plastic shoes electrically insulate people from the ground?
Dec
5
awarded  Editor
Dec
5
revised Not working brakes: just another energy conservation problem
added 64 characters in body
Dec
5
comment Not working brakes: just another energy conservation problem
The correct result (reported on the textbook) is 120 m. If I do what you say, the result is 35,17 m, isn't it? Thanks
Dec
5
reviewed Approve suggested edit on Not working brakes: just another energy conservation problem
Dec
5
asked Not working brakes: just another energy conservation problem
Dec
5
comment Energy problem: What's wrong here?
Thanks again! ;)