|See Davy lamp Sir Humphry. 1778--1829, English chemist who isolated sodium, magnesium, chlorine, and other elements and suggested the electrical nature of chemical combination. He invented the Davy lamp|
|Davy (dā'vē) Pronunciation Key
British chemist who was a pioneer of electrochemistry. By means of electrolysis Davy isolated several elements, including sodium and potassium (1807), and barium, boron, calcium, and magnesium (1808). He also proved that diamonds are a form of carbon.