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A steam engine is a heat engine that performs mechanical work using steam as its working fluid. Using boiling water to produce mechanical motion goes back over 2000 years, but early devices were not practical. The Spanish inventor Jerónimo de Ayanz y Beaumont patented in 1606 the first steam engine. In 1698 Thomas Savery patented a steam pump that used steam in direct contact with the water being pumped. Savery's steam pump used condensing steam to create a vacuum and draw water into a chamber, and then applied pressurized steam to further pump the water. The first commercial true steam engine using a piston was developed by Thomas Newcomen and was used in 1712 for pumping in a mine.
La photo haute résolution gratuite de roue, rouge, véhicule, Couleur, Motat, Sonydslra580, volant, Vieille machine, Roue rouge, manivelle, Appareil motorisé
, Pris avec un DSLR-A580 01/30 2017 La photo prise avec 18.0mm, f/3.5s, 1/30s, ISO 400
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