By William Gurstelle
Humphry Davy and the Arc Light
Image from National Portrait Gallery, London
» Thomas Edison did not invent the first electric light.* More than 70 years before Edison’s 1879 incandescent lamp patent, the English scientist Humphry Davy developed a technique for producing controlled light from electricity.
Sir Humphry Davy (1778–1829) was one of the giants of 19th-century science. ...