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seen Jul 7 at 11:35

Jun
11
comment Velocity distribution in ion source (electron bombardment) for Bainbridge mass spectrometer
The main points are: -Get a realistic example with numbers -In particular the velocity distributions before entering the Wien filter -I am not sure if this type of spectrometer is really used with an electron bombardement source (rather a source which has a much broader velocity distribution); I don't know what is really used in this setup. -Good specific references are missing ...
Jun
5
awarded  Investor
May
28
asked Reverse polarity vs falling in Millikans experiment
May
10
awarded  Popular Question
Apr
21
awarded  Popular Question
Apr
18
awarded  Nice Question
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?
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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
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Mar
16
revised Signs in derivation of capacitor discharge differential equation
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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
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