After hearing this invention of his work, Edison said, "I was never so taken aback in my life"
C. Vanderbilt thought George Westinghouse's idea of stopping a train by this means a fool notion
First built in 1960, it's also been called an optical maser
This unit of weight is abbreviated mg.
The first modern ones of these, called Lucifers, were invented in 1827 & struck on sandpaper
To stop staining, Farah makes men's slacks coated with this, usually found on cookware
Hans Lippershey, who invented this instrument in 1608, called it a "looker"
Cesium was the first element found by this process using the band of colored light produced by a prism
A coin put in a 1615 vending machine opened a locked top so customers could receive a pipeful of this
The first practical machine powered by this was used in 1698 to pump water out of mines