Questions about "Heavy Water" and vibration...Thank you! Hey everyone, I am hoping someone can help explain something to me. Some biology students wanted to conduct research, and I don't quite understand a few things (as I think they are not correct, but I am not a biology student) My first question: They want to feed flies some "Heavy Water" and see how it affects their daily clock in terms of activity. The aim is that different sources of "Heavy Water" will have different vibration, and that vibration will interact with receptors different, based solely on the vibration quality of each of the 3 different sources of "Heavy Water"....In terms of quantum biology 1st question: Why would they use heavy water????? (if they are just wanting to see if different vibrations of molecules act differently on the flies) 2) What would give me 3 samples of water, each with different vibrations? Could it not just be different temperatures ? Since cold, warm, hot water will have different vibrating molecules? BIG QUESTION :) ........ From a quantum physics standpoint, how could I use quantum theory to test if a receptor will act different on a quantum level???