I found these videos on Youtube the other day. There not really nerdy, except in a vaguely scientific way, but cool to watch. The guy filming heats a small ball of nickel until it’s red hot and the places the ball onto (or into) various substances. There’s a whole series of them, with objects including a giant gummy bear and a glass of vodka. Turn your volume up and listen to the sounds that are produced. I’ve posted a couple of my favorites here, but be sure to check out all of them.