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 ...

Scottish inventor James Watt noticed these ... waste of energy and radically advanced the power, efficiency, and cost-effectiveness of steam engine. The device was patented in 1769 and reached ...

Rudolf Diesel was a talented inventor who designed devices from refrigerators to steam engines ... one that was more powerful and efficient than the gas engines that were becoming widely used ...

Rudolf Diesel died in mysterious circumstances before he was able to capitalise on his ingenious invention ... scale engine that could replace the horse would be a godsend. The steam engine ...

Diesel's invention offered a different internal ... so it was a more efficient alternative to the steam engines and early gasoline engines of the 19th century. Diesel designed his engine to ...

This took quite some time: It was in 1698 that inventor Thomas Savery filed a patent for what may have been the first steam engine designed ... more sophisticated and efficient machine would ...

Mark Miodownik shows a working model of a steam engine originally ... portable and efficient. This clip is from the series The Genius of Invention. This clip would be ideally suited to showing ...