robjohn

216 reputation

	216 reputation	bio	website		visits	member for	1 year
13 badges		location	West Hills, CA		seen	yesterday

10 Actions

23h	awarded	Yearling
Jan 21	answered	What does this quote about the four dimensional divergence of an antisymmetric tensor mean?
Dec 11	comment	Blue-shifting as opposed to violet-shifting @Kitchi: actually, that plot is "Relative spectral distribution of the uneclipsed or partially eclipsed sky for solar elevation angle less than 51°" The blue responses look to be pretty similar for all plots.
Dec 11	comment	Blue-shifting as opposed to violet-shifting @Kitchi: Wouldn't the spectral response curve above include the effects of Rayleigh scattering? It is data from a ground-based spectrograph. Some details of the instrument are given in this paper.
Dec 11	answered	Blue-shifting as opposed to violet-shifting
May 19	awarded	Teacher
May 18	awarded	Supporter
May 18	comment	High school double lens optics question @DohnJoe: The original question was simply stated poorly. Since the answers match, the assumption I made was evidently correct. However, if the problem were stated better, no such assumption would be necessary.
May 18	awarded	Citizen Patrol
May 18	answered	High school double lens optics question