We rely on machines in everyday life, and those machines rely on energy. Learn about the different sources of energy that power machines: heat, fuels, electricity, and nuclear energy. We'll also cover external and internal combustion engines, steam engines, thermal power stations, Nicholas Otto and the four-stroke piston engine, and inventors Rudolph Diesel and Thomas Newcomen.

Originally released by Cerebellum Corporation, 2013. Streaming video file encoded with permission for digital streaming by Infobase on July 10, 2018.

Combustion Engines (2:25); --External Combustion Engines (2:46); -- Internal Combustion Engines (4:06); -- Summary (1:33); -- Credits: Combustion Engines (0:41); .