Hello all, I'm trying to get clarification about the experimental investigation of quantum entanglement and I am stuck on one main thing. How is it shown that the correlated properties between particle properties can be revealed instantaneously(or extremely rapidly) upon making the appropriate measurement on one of the particles? Amongst other things this requires extremely precise timing methods.There are other problems such as how do we specify the exact time that Alice makes her measurements and Bob makes his? I have spent a fair bit of time searching this but to no avail. Thank you.