Yes, this question sounds silly. However someone who ought to know better insists (with insults) that a person standing on a planet has the same angular momentum as the planet. They certainly have the same angular velocity, but then to have the same angular momentum, wouldn't I have to have the s...

What is the precise mathematical description of an incoherent single-frequency signal for any type of wave? The reason I'm asking is because of the following apparent paradox in which incoherent light cannot exist. Consider sunlight, for example, which has passed through a polarizing filter and f...

If the only observer for the Schrödinger's cat experiment was a camera filming the box from the outside while the box was opened automatically without direct human intervention, and the only observation performed was through watching the recorded video ten years later, will the wave function coll...