physicsfun on Instagram: "Fire Piston: rapid adiabatic compression creates enough heat to ignite and incinerate a small ball of cotton. Similar physics to how Diesel engines ignite fuel without a sparkplug. Adiabatic processes are those in which heat does not flow from the system to the environment, achieved here by the short duration of the compression- to get a flame it has to be done quickly with some force! ➡️ Follow the link in my profile for info on where to get this inexpensive demo and m