I am just a high school student trying to self study, so please excuse me if you find the question silly. My teacher says that we can see a point when a ray of light from the point is reflected into our eye. But almost everyone on the internet say that when two diverging rays from a point enter...

Ehrnfest's theorem, to my level of understanding, says that expectation values for quantum mechanical observables obey their Newtonian mechanics counterparts, which means that we can use newton's laws on expectation values. However, in the case of the quantum harmonic oscillator, this clearly doe...

Let us consider a system of charges in space. The potential energy of the system of charges is determined by the amount of work done by the external force to assimilate the charges in that manner. But if it is asked that what is the potential energy of a particular charge in that system of charge...

When an object is heated, energy is absorbed by vibration, translation, and rotation of molecules. How does this heating apply to electrons?

Take, for instance, a W-80 nuclear warhead. Does technology exist, say in the form of a satellite or drone, that could detect the warhead's presence (assuming it's not enclosed in some kind of shielding)?