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If a comet appears increasingly brighter as it approaches the earth, how many times brighter will it appear as it moves from $25AU$ to $5AU$ from us?...
Asked on 07/13/2021 by user784696
2 answerI am taking a course on classical field theory, and am not entirely sure as to what motivates the for of the Lagrangian density for a complex scalar field. In...
Asked on 07/13/2021
0 answerIn page 168 in Ref. [1], the authors search for a suitable order parameter for the nematic phase in liquid crystal. If $vec v^alpha$ is the direction of a...
Asked on 07/13/2021 by KvanteKaffe
4 answerI would like to ask this question by the example of the CdS buffer layer in CIGS solar cells. One paper (https://pubs.rsc.org/en/content/articlelanding/2017/se/c7se00348j#!divAbstract) says that CdS is deployed,...
Asked on 07/13/2021
1 answerI'm not sure this equation is the right one if we invert the direction of the positive $y$-axis. Am I right if we assume the positive direction of the...
Asked on 07/13/2021 by Jyotishraj Thoudam
3 answerIn the closed bosonic string we have both left and right moving sectors with modes $alpha_m^mu$ and $tilde{alpha}_m^mu$ respectively where $min mathbb{Z}$ and where we have ...
Asked on 07/13/2021
1 answerI would like to get one thing straight in my mind: If I fill a balloon let's say with 10 bar of air. Is there a formula that relates the...
Asked on 07/13/2021
1 answerAs is familiar to anyone who has inadvertently spilt a few drops of water onto a highly heated pan, rather than boiling away in a flash the water gathers itself...
Asked on 07/13/2021 by omegadot
1 answerIs a parity transformation$$(?,?,?) → (−?,?,?)$$ or $$(?,?,?) → (−?,−?,−?)$$ Which coordinates cancel out momentum? $(?,?,?)$ (clockwise directions) and $(−?,?,?)$ (counterclockwise directions) or $(?,?,?)$...
Asked on 07/13/2021 by user279310
1 answerIn quantum field theory with a mass gap, why do states in the asymptotic future/past turn out to have a Fock space structure? For a free quantum field theory, that's...
Asked on 07/13/2021 by Lawrence Christos
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