This post was originally published on this site

Some 260 years ago a Scottish instrument maker figured out that by adding a condenser to a steam pump the efficiency of the machine could be improved dramatically enabling many more applications such as grinding, milling and weaving. He devised the concept of horsepower to measure the power of machines. A measurement for a unit …

This story continues at Fable: The Genius With His Face On A Banknote

Or just read more coverage at Electronics Weekly