thermal - referring to or related to heat; "thermal movements of molecules"; "thermal ability"; "thermic Power"; "the caloric effect of daylight" This incessant jostling is kinetic Electricity, along with the sum of it—throughout trillions and trillions of particles—is what we simply call thermal Power. English is a funny language. https://pcbthermalcyclingfailurem14680.dailyhitblog.com/41148720/what-does-thermal-shock-testing-for-electronics-mean