Heat machines have been the main engine that has revolutionized society in the 20th century. At present they are still used in the automotive industry and in the generation of electricity, although little by little they are being replaced by electric motors.
Large steam engine driving the looms in a factory.
Small steam engine of 1890.
Exhibition of steam tractors.
Internal combustion engine¶
Explanation of the 4-stroke engine.
Boat diesel engine
Motor to reaction¶
How a jet engine works.