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I've been struggling without any result on a formal problem about the relation between microscopic states of a system and the volume occupied by a macrostate in the phase space....
Asked on 02/02/2021
1 answerSince I think the two questions are related that's why I decided to put them together. Why pressure is a scalar ? It's the ratio of two vectors (force and...
Asked on 02/02/2021 by katana_0
2 answerAll at room temperature. Inject gas bubbles into the bottom of an open container of liquid. Gas bubbles rise in the denser, heavier liquid. As the gas bubble is being...
Asked on 02/02/2021 by Kerry McCarthy
0 answerThere is a difference between the classical field $phi(x)$ (which appears in the classical action $S[phi]$) and the quantity $phi_c$ defined as $$phi_c(x)equivlangle 0|hat{phi}(x)|0rangle_J$$ which appears...
Asked on 02/02/2021
3 answerFollowing "Introduction to Fourier Optics" by Goodman, in section 5.3 it is explained how to derive the impulse response of a lens. ...
Asked on 02/02/2021 by Andrea Maiani
1 answerSuppose in the universe, there are inertial frames in the vicinity of galaxies. Suppose also that these frames rotate slightly with respect to each other - that the universe is...
Asked on 02/02/2021 by RERT
1 answerThe wavelength of Characteristic X-ray emissions is given by the expression $$frac{1}{lambda}=R_text{H} (Z_{eff})^2 left(frac{1}{n^2}-frac{1}{m^2}right)$$ Where $R_text{H}$ stands for Rydberg's constant and $n$ & $m$ denotes the...
Asked on 02/02/2021
0 answerFrom the I-V characteristics of the Langmuir probes used in Plasma diagnostics, we can calculate the plasma density, temperature, etc from the ion and electron saturation currents. But why does...
Asked on 02/02/2021 by Manoj
1 answerThinking about the physics of thermonuclear fusion, I have always had an intuitive sense that making fusion feasible is matter of reactor size. In other words I feel like:...
Asked on 02/02/2021 by Prokop Hapala
3 answerI found in my textbook thatOscillation of light wave mainly represents the periodic change of electric field $ vec E$ as contribution of $vec E$ is the most...
Asked on 02/02/2021 by user284935
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