Humphry Davy invented the arc lamp in 1809

1. Humphry Davy is credited with creating the first electric light in 1809 by connecting two wires attached to a charcoal strip and batteries. Today this is known as an arc lamp. In addition to the arc lamp, Davy was the first scientist to isolate Potassium and Sodium and was the first to point out that Oxygen was not the principle of acidity.