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pfnuesel
  • Member for 12 years, 8 months
  • Last seen more than a week ago
  • Berne, Switzerland
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26
Why couldn't the decay $\pi^- \to e^- + \bar\nu_e$ occur if electrons were massless?
Jan 25, 2016
25
Why did it take so long to find the Higgs?
Apr 2, 2016
19
Neutrino annihilation and bosons
Jul 21, 2014
17
If a neutrino has a rest frame, why can't a photon have a rest frame as well?
May 2, 2014
8
Conservation of 4-momentum in special relativity
Jul 4, 2014
7
"The mass of the proton is $1.672\,621\,637(83) \times 10^{-27}\:\mathrm{kg}$" - please, how does the error work for this?
Mar 23, 2017
6
What is the density and energy of a photon?
Jun 19, 2014
5
Center of Mass of two planets
Aug 7, 2013
5
Weird case for relative velocities and special relativity
Mar 17, 2014
5
What is a graviton?
Jun 25, 2014

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