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I know there are three "masses". "inertial mass", based on Newtonian Mechanics "rest mass" and "relativistic mass", based on relativity Anyone can explain three of these in a relatively easy...
Asked on 06/22/2021 by I'm a lightbulb
2 answerSuppose a "2-state atom" and a light field are quantized with the following Hamiltonians, respectively: $$hat{H}_A=hbaromega_{21}hat{sigma}^{dagger}hat{sigma}$$ and $$hat{H}_R=sum_{textbf{k}}hbaromega_{textbf{k}}(hat{a}^{dagger}_{textbf{k}}hat{a}_{textbf{k}} + frac{1}{2}) .$$ Where $hat{sigma}^{dagger}=left|2rightrangleleftlangle1right|$ and $hat{sigma}=left|1rightrangleleftlangle2right|$, where $left|1rightrangle,left|2rightrangle$ are the 2...
Asked on 06/22/2021
1 answerTime dilation calculated using Schwarzschild metric for a non rotating spherical body is:$$t_0=t_fsqrt{1-frac{2GM}{rc^2}}$$ For such a non rotating spherical body, what would the time dilation of a...
Asked on 06/22/2021 by aepryus
2 answerAfter watching a video by Veritasium about measuring (or, more accurately, not measuring) the one-way speed of light, I believe I have come up with a way...
Asked on 06/22/2021
5 answerReading through Scattering, Absorption, and Emission of Light by Small Particles by Mishchenko, I came across a formula to calculate the extinction and scattering cross section (Book page 57, PDF...
Asked on 06/21/2021 by CryoDrakon
0 answerI have been studying RC circuits and noticed that even in a resistanceless circuit, when a capacitor is charged by a constant potential difference source, there is considerable heat generation,...
Asked on 06/21/2021
1 answerTwo scenarios:Solid metal cylinder of $43^circ$ C is placed in room of $23^circ$ CIdentical solid metal cylinder of $3^circ$ C is placed in another (identical) room...
Asked on 06/21/2021 by Fritz Kuhn
1 answerWhat is the reason that before a heavy shower of rain, a few droplets always seem to fall? Why doesn't the heavy shower begin at once? While freezing water, for...
Asked on 06/21/2021
1 answerI'm reading a paper written by De Rujula and Glashow called "Nuclearites: a novel form of cosmic radiation". In this paper the authors propose the existence of nuggets of strange...
Asked on 06/21/2021
0 answerA quantum mechanical two-level system driven by a constant sinusoidal external potential is very useful in varies areas of physics. Although the widely used rotating-wave approximation (RWA) is very successful...
Asked on 06/21/2021
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