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Let's consider a ring laser where the laser must pass through the gain material before it is sent toward a partially reflective surface $ R=1-T $. The other mirrors are...
Asked on 02/01/2021 by kuantumbro
1 answerCan someone please explain this type of vector to me, I can not understand it.Axial vectors have an inner orientation, i.e. the direction of the vector indicates the positive orientation....
Asked on 02/01/2021 by Daniel OnoRoc
1 answerAn element of mass $Delta m_r$ (mass of rainfall) falls vertically onto a mass $m_c$ (a cart). The empty cart starts from rest and there is no friction....
Asked on 02/01/2021 by Renzo M-Svartz
1 answerIn the Physics from Symmetry book (pg. 80-83), the author uses the convention of dotted and undotted spinor indices such that the $(frac{1}{2},frac{1}{2})$ representation of the...
Asked on 02/01/2021
0 answerPhotons are energy. According to general relativity they should bend space.Assuming two photons pass one another in a large void of empty space how would they gravitationaly affect...
Asked on 02/01/2021
4 answerA quantum vacuum corresponds to closed loops of particle-antiparticle pairs, in the language of Feynman diagrams. There is no relation between $E$ and $p$ for...
Asked on 02/01/2021
1 answerSay I have a differential equation in $mathbb{R}^n$, Newtons Equation : begin{align} frac{dgamma(t)}{dt}=&dot{gamma}(t), nonumber frac{ddot{gamma}(t)}{dt}=&-nabla...
Asked on 02/01/2021 by flyingbirds
1 answerI watched a video in which liquid oxygen when passed through the poles of the magnet gets suspended or rather sticks to it. It says it is due to diamagnetic...
Asked on 02/01/2021 by user272922
2 answerThe Joule Thomson coefficient for various gases can be found in textbooks, e.g. have I found that hydrogen has $mu_{jt}=-0,024735$ K/bar and an inversiontemperatur of around 200 K. Not...
Asked on 02/01/2021 by Irenaius
2 answerjust wonder how many lb dry ice could be produced from $5$ lb $CO_2$ cylinder at $860$ psi and $30$ C , assuming no recyle co2...
Asked on 02/01/2021 by Daniel Setyadi
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