What happens if you compress heat?
I realize it might sound pretty stupid, but I’m curious as to what would happen if you were to take a lot of heat energy and simply compress it. Would there be combustion at some point or…? Or could a fire burn on only molecules found in air (aka, without wood or a similar fuel source), like, if you could pull a fire bender and make fire appear and float over your hand could it keep burning only using the air around it? I seriously doubt it. I figure you’d still require some sort of chemical reaction or gaseous fuel to feed it. It’s mostly just a weird idle curiosity, but I figured I’d see if there were any experts on heat and other forms of energy who felt like giving an answer.