As far as I know, in physics, calculus is approached using nonstandard analysis in which $dx$, $dy$, etc. (infinitesimals) are treated as fixed, extremely small quantities rather than the standard analysis approach using limits where they are treated as something that approaches $0$. I understand...

Let us suppose I have a particle in a 1D infinite potential well of length $L$ which is in the ground state. The energy is given by $$E=\frac{\hbar^2\pi^2}{2mL^2}.$$ Now I decrease the size of the well gradually to lets say $L-x$. This means that particle is still inside the 1D well, since it can...

(Rigorous theorists will have to forgive my phrasing on this question, I’m new to GR and most of my physics training is in quantum mechanics) In non-Euclidean geometry, we can speak of a spherical space as in an intrinsically curved space. In a spherical space, “parallel” lines converge to a poin...

If i were to do an experiment measuring the tesla of an iron core solenoid magnet, how would i determine the value for the dipole moment in the formula displayed here https://en.wikipedia.org/wiki/Dipole#Field_of_a_static_magnetic_dipole What does the metre squared represent?

Suppose you are inside a closed box which is moving with a constant speed with no acceleration whatsoever. You cannot see outside the box. If you are given all the instruments you need, what experiment could you perform to ascertain that you are, in fact, in motion? This was a question asked in...

If at high temperatures atoms are more intensely interacting with each other or emitted photons that also could make the core vibrate. Is in these circumstances the radioactive material more likely to fission faster? Can this be used to get rid of radioactive garbage?