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seen Mar 27 at 10:51

Mar
26
awarded  Popular Question
Mar
21
revised How to calculate the capacity of an electroscope out of the geometry and why is it independent on the pointer deflection?
edited tags
Mar
21
asked How to calculate the capacity of an electroscope out of the geometry and why is it independent on the pointer deflection?
Mar
17
revised Signs in derivation of capacitor discharge differential equation
added 835 characters in body
Mar
16
revised Signs in derivation of capacitor discharge differential equation
added 83 characters in body
Mar
16
asked Signs in derivation of capacitor discharge differential equation
Mar
7
asked Role of roughness in friction
Feb
8
comment Gedankenexperiment to derive the Robertson uncertainty relation without confusing it with the obersver effect
17 - 19 years old (a German Gymnasium, grade 13)
Feb
8
comment Gedankenexperiment to derive the Robertson uncertainty relation without confusing it with the obersver effect
@JánLalinský It's part of the curriculum and I don't want to make the ideas too wrong (for example by confusing the Robertson relation with the noise-disturbance relation...)!
Feb
8
comment Gedankenexperiment to derive the Robertson uncertainty relation without confusing it with the obersver effect
@Martin I guess this will be mathematically to advanced for high school level.
Feb
8
asked Gedankenexperiment to derive the Robertson uncertainty relation without confusing it with the obersver effect
Feb
4
comment Conservation of energy and momentum in photoelectric effect
Ok, so the $\phi$ represents that the solid takes some part of the energy to fulfill energy conservation. But how would be the equation for the momentum conservation?
Feb
4
asked Conservation of energy and momentum in photoelectric effect
Jan
26
revised How to get the electric field strength of a plate as approximation of a sphere
added 434 characters in body
Jan
23
awarded  Notable Question
Jan
22
comment How to get the electric field strength of a plate as approximation of a sphere
Does the hemisphere has the same field strength as the sphere? Why? Yes then I would get the correct result, but if it has half of the field strength, both "halfs" would cancel out...
Jan
22
revised How to get the electric field strength of a plate as approximation of a sphere
added 98 characters in body
Jan
22
asked How to get the electric field strength of a plate as approximation of a sphere
Jan
14
awarded  Notable Question
Dec
23
awarded  Yearling