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Einstein's equivalence principle (EEP) states: "Locally, a free-fall frame in a gravitational field is equivalent to an inertial frame in space in the absence of a gravitational field". However,...
Asked on 05/25/2021
3 answerIn our introductory solid state lectures, the professor described von Laue's$^1$ diffraction conditions making the assumption of elastic scattering, which states that the incoming and the scattered radiation have...
Asked on 05/25/2021
1 answerI already derived a QM expectation value for ordinary momentum which is: $$langle p rangle= intlimits_{-infty}^{infty} overline{Psi} left(- ihbarfrac{d}{dx}right) Psi , d x$$ And I...
Asked on 05/25/2021 by 71GA
3 answerI will be measuring the Joule-Thomson coefficient for noble gases and I am trying to perform the uncertainty budget analysis prior to the measurements. However, I have my doubts here....
Asked on 05/25/2021 by jaktk
0 answerIn this 2013 Nature article there is a short presentation of thecausal dynamical triangulations approach to quantum gravity, where it is said Intriguingly, the simulations also hint...
Asked on 05/25/2021 by Stéphane Rollandin
1 answerObserving the freezing phenomenon of river, here are some questions pop up. Comparing with pure water, impurity in water will alter melting point, what are the qualitative and quantitative explanation,...
Asked on 05/25/2021
0 answerWhat was the size of the Universe at start of recombination (377000 years) when the Universe started to become transparent and release of trapped photons into what we now know...
Asked on 05/25/2021 by Shekhar Damle
2 answerSo I had a simple thought: Venus is ~400C with 95% CO2, and Earth is ~15C with 0% CO2.. Assuming linearity, this equates to 1C for 1% atmospheric CO2. Why...
Asked on 05/24/2021
0 answerI am no scientist, but I'm doing some research about asteroids and their ability to cause an EMP through their impact. I found these very helpful lines on this site:...
Asked on 05/24/2021 by user287877
2 answerCan you shield yourself from Unruh particles? In an old answer to a different question, Ron Maimon says yes:You should think of the radiation as coming from the horizon---...
Asked on 05/24/2021 by benrg
2 answerGet help from others!
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