The opening post has an empirical experiment, but they chose to measure it with a probe thermometer in the glass itself, which is highly inconsistent at best due to the placement of the ice cubes. Your method sounds much simpler and more accurate. It's basically why I didn't choose to study civil engineering. I know I could if I found a way to make myself plow through the math. It just never seemed that interesting, especially a future job as a human calculator. Not in the I-hate-math-its-useless-anyway kind of way, just a very low score when you divide how interesting it is by the necessary effort . What have you done with your mechanical engineering degree? It was one of my options, mostly because you get to make awesome contraptions. But it seems a far stretch from audio engineering afaik.And nobody has to argue about heat sink equations.