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Oct
17
awarded  Civic Duty
Oct
17
answered Which BICEP2 r value should be compared to Planck's r<0.11?
Oct
17
answered Field of moving charge / Lorentz;Lienard-Wiechert
Oct
17
revised Feynman's proof for Liénard-Wiechert's potential of a moving charge
added analysis.
Oct
15
answered Feynman's proof for Liénard-Wiechert's potential of a moving charge
Oct
14
revised What experiments compete with BICEP 2, and when are their results expected?
added description of current situation
Oct
14
reviewed Reject Is this summary of modern theoretical physics correct?
Oct
14
reviewed Reject Why in PN junctions the octet rule is dominating electrostatic repulsion?
Oct
13
reviewed Approve Why in PN junctions the octet rule is dominating electrostatic repulsion?
Oct
10
answered What was Feynman's “much better way of presenting the electrodynamics” — which did **not** appear in the Feynman lectures?
Oct
8
reviewed Reject Tokamaks and the reason they are still not efficient
Oct
8
reviewed Reject Stopping Distance (frictionless)
Oct
7
comment Why is Earth's climate so stable?
A leading (maybe the only?) explanation for the escape from snowball earth is by Kirschvink: the build-up of atmospheric carbon dioxide (and resultant surface heating) emitted by volcanoes, since the usual scrubbing mechanisms are ineffective in snow-land. Reference: web.gps.caltech.edu/~jkirschvink/pdfs/laRechercheEnglish.pdf
Oct
6
reviewed Reject Capacitors and Resistors - Series or Parallel?
Oct
6
reviewed Approve Why does friction play the role of centripetal force during the turning of a car?
Oct
6
reviewed Approve A step in the derivation of the magnetic moment of the electron in Zee's QFT book
Oct
3
reviewed Reject If an antenna must be $\frac{1}{4}$ of the wavelength, how can car antennas be so small?
Oct
2
answered What's the $\ell$ in the Bicep2 paper mean?
Oct
1
reviewed Reject What would happen if an accelerated particle collided with a person?
Sep
29
reviewed Approve What happens to a white dwarf star if it has mass higher than the Chandrashekhar limit?