Humphry Davy was a Cornish chemist and inventor, He is best remembered today for his discoveries of several alkali and alkaline earth metals, as well as contributions to the discoveries of the elemental nature of chlorine and iodine. One of the first tasks imposed on him was the delivery of a course of lectures on the chemical principles of tanning, he was given leave of absence for July, August and September 1801 in order to acquaint himself practically with the subject. The main facts he discovered from his experiments in this connection were described before the Royal Society in 1803.
The light bulb
In 1809, the invention of the very first electric light. He did this by connecting two wires to a single battery and then attatching a charcoal strip between the other two ends of the wires
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