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As a part of larger project, I decided to test my Lagrangian formulation of simple system of two rigidly connected point masses as indicated below. ...
Asked on 08/03/2021 by Aleksander Fiuk
2 answerI have learned electromagnetic waves in a free space (conductiviy=0) propogates without loss.But if medium have conductivity there are 2 cases good insilator case and good conductor case....
Asked on 08/03/2021 by Tesla058
1 answerI want to do some calculations for anisotropic properties. The software I am using only takes a tensor matrix as an input. Now to my question. I have 3 literature...
Asked on 08/03/2021 by Sommerfeld
0 answerIn Feynman's book, when he talks about the motion of a rapidly spinning top, he mentions:"When we apply a Torque to a rapidly spinning top, the direction of the precessional...
Asked on 08/03/2021
1 answerGiven the metric in Schwarzschild coordinates $$d s^{2}=-e^{2 Phi(r)} d t^{2}+e^{2 Lambda(r)} d r^{2}+r^{2} d Omega^{2}$$ and a vacuum Einstein equation with cosmological constant given by: $$G_{mu nu}=-frac{3}{L^{2}}...
Asked on 08/03/2021 by user243050
1 answerKleppner and Kolenkow Introduction to mechanicsIn the approximation that the Earth isspherical, it experiences no torque from nearby bodies. Consequently,its angular momentum is constant—both its spin and its...
Asked on 08/03/2021
3 answerSources I have been reading Chapter 11 and 25 of Andrew Hamilton's amazing notes which has some material on tetrad formalism in general relativity...
Asked on 08/03/2021
1 answerAs we know there is a narrow notch in the reflectance spectrum of a Phase shifted FBG. We have Bragg condition for reflected band of any uniform FBG. My question...
Asked on 08/03/2021
1 answerI'm studying up on circuit calculations and came across this circuit: I was taught that voltage in a parallel circuit is...
Asked on 08/03/2021 by Ceecee
1 answerI realize this might be a silly question but it is plainly true that, for example, a lighthouse beacon or any powerful light source, produces a much larger "spot" the...
Asked on 08/03/2021
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