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location Hamburg, Germany
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visits member for 2 years, 11 months
seen Sep 23 at 12:09

Nov
19
awarded  Popular Question
May
22
awarded  Nice Question
Apr
30
awarded  Yearling
Aug
25
comment Is it intuitive that the conserved quantity from time symmetry is what we know as energy?
"how can you realize that it is exactly the Noether-current associated with time translation invariance, the one quantity necessary to boil your water?" - yes that was what I intended to ask. If you see a way to get my question more to the point, feel free to edit - I'd like to learn where I misled Ron. (This really irritates me.)
Aug
25
comment Is it intuitive that the conserved quantity from time symmetry is what we know as energy?
I've ever only seen formulae like yours, containing abstract generalised coordinates (something I once learned for point masses, but never understod the way to generalise it to my example 2 and 3). I'm just still not educated enough to see why the quantity I move around to have my steam engine going is just the same as the one you describe here. Thats what I want to understand. Thank you for the response, Ron.
Aug
25
comment Is it intuitive that the conserved quantity from time symmetry is what we know as energy?
"When you put heat in water, you are moving energy .." - yes, and I want to understand why this energy is connected to Noethers theorem.
Aug
25
revised Is it intuitive that the conserved quantity from time symmetry is what we know as energy?
added 265 characters in body
Aug
24
revised Is it intuitive that the conserved quantity from time symmetry is what we know as energy?
Added a question mark to the question
Aug
23
awarded  Editor
Aug
23
revised Is it intuitive that the conserved quantity from time symmetry is what we know as energy?
deleted 1 characters in body
Aug
23
asked Is it intuitive that the conserved quantity from time symmetry is what we know as energy?
Aug
23
comment Parity, how many dimensions to switch?
John, I would like to accept two answers, but can't, sorry.
Aug
23
accepted Parity, how many dimensions to switch?
Aug
22
awarded  Scholar
Aug
22
accepted Anti particles: What exactly is inverted?
Aug
22
comment Parity, how many dimensions to switch?
I tried to find a generalisation of: 3d-> flip one or three, 2d -> flip one. (And came up with "flip any odd number" without beeing able to distinguish whether this is interesting or just stupid.)
Aug
22
asked Parity, how many dimensions to switch?
Aug
22
awarded  Supporter
Aug
22
comment Anti particles: What exactly is inverted?
Maybe, but not recognisably so.
Aug
21
awarded  Student