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You've probably seen them; shoebox phone projectors. They throw a very dim image, but I'm surprised it throws any image at all, since...
Asked on 08/24/2021 by RobotRock
2 answerMy Level/Background: I have just completed my first year of undergrad. In high school, I completed AP Physics C Mechanics and Electricity and Magnetism. In my first year of undergrad,...
Asked on 08/23/2021
2 answerI'm studying structural mechanics and I have been stuck on a thought.I drew a very simple cantilever beam situation. If I make a fictional cut like in my fig.1,...
Asked on 08/23/2021
2 answerGiven the standard geodesic equation:$$frac{d^2 x^mu}{dlambda^2}+Gamma ^mu _{sigma rho}frac{d x^sigma}{d lambda}frac{d x^rho}{d lambda}=0$$we want to apply it to the Schwarzschild metric; conceptually this simply means using the...
Asked on 08/23/2021
1 answerSuppose we Have an atom $A$ that can emit light with frequency $mu_1,mu_2,...$ and an atom $B$ that can emit light with frequency $nu_1,nu_2,...$.Now suppose...
Asked on 08/23/2021
1 answerI'm reading Weinberg's paper on "Dynamics at Infinite Momentum" in which he proves a claim about the type of Feynman diagram that contributes finitely to the perturbation series and the...
Asked on 08/23/2021
0 answerThe way I see it:Assuming space is a perfect vacuum, a satellite should stay in circular orbit with CONSTANT RADIUS around earth forever but I think the radius should...
Asked on 08/23/2021 by Stressed
2 answerI've read every thread on StackExchange (and Quora and reddit...) that I can find about a physical intuition for the phase in the quantum wave function, and I still Just....
Asked on 08/23/2021 by QuantumFumbler
13 answerFor astronomy, as originally invented, the Hanbury Brown Twiss interferometer is good for finding the angular diameter of stars and is not a rapidly fluctuating observable like the...
Asked on 08/23/2021 by yayu
1 answerI am trying to understand a derivation concerning the number of photons associated with an electromagnetic field which is irradiated on some probe. The point is to get a...
Asked on 08/23/2021
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