I asked about superconductors in another paost, and what I got was how superconductivity is achieved, and how electrons are attracted together via interactions with atomic nuclei. My question is, what exactly is a cooper pair? To me, when I think of the word pair, I immediately imagine the electrons as stuck together as a, well, a pair, and moving like so through the conductor. Yet, this does not help in reducing the number of collisions the electrons have with other pairs or the nuclei, which are the cause of resistance. I don't know if this is accurate, but I got from some book that these "pairs" are not actually stuck together, but move in opposite directions and are, like, mirror images of each other. Then the book also says that if an electron in the pair hits something, theother one in the pair hits something else, such that total momentum and energy is conserved. This kinda confuses me, since for one, I have no idea how the electrons can be "linked" if they are apart i.e. one feels the effect of the other electron (this is somewhat like entanglement if I am not wrong. I do not know if it has any relation to this), and how momentum can be conserved at all if anything hits anything else - SOME energy has to be lost, right?