When an inventor has a unit of measurement named after him, it's clear his work had more than a small impact on scientific and industrial progress. So it was for James Watt, whose Watt engine is often ...

Reprint of "Directions for erecting and working the newly-invented steam-engines. By Boulton and Watt. [1779]" with reproduction of t.-p.: p. [373]-398 and 6 pl. on 3 l. "Directions for working ...

Heron, the great inventor of Alexandria, described in detail what is thought to be the first working steam engine. He called it an aeolipile, or "wind ball". His design was a sealed caldron of water ...