Hello Guys, I am a mechanical engineering student and taking nuclear engineering course. Professor told me to search SWU (separative work unit). I know the general formula and the value function... But I need the derivation of that formula from entropy... Is there any document that you can suggest? I checked possible books to find out but could not get a satisfactory result. They just put the formula and say here is the value function and this is the formula for SWU. I do not want to present my topic like that. I read in a website that the value function comes from change in entropy for the gas. Thanks in advance.