Humphry Davy, English chemist, 1821
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Humphry Davy, English chemist, 1821
Humphry Davy, English chemist, 1821. Davy (1778-1829) discovered the anaesthetic effects of laughing gas (nitrous oxide). In 1801 he was appointed lecturer at the Royal Institution, where he investigated, with his assistant Michael Faraday (1791-1867), his theory of volcanic action. Using electrolysis, Davy isolated the metals barium, calcium, magnesium, potassium, sodium and strontium, as well as proving that chlorine was a chemical element. He is probably best known for his invention in 1815 of the miners safety lamp, which enabled deeper, more gaseous seams to be mined without risk of explosion. An example of the lamp is on the table at his elbow. After a portrait by Thomas Phillips
Media ID 14864876
© Oxford Science Archive / Heritage-Images
Chemist Chemistry Davy Davy Lamp Humphry Humphry Davy Lamp Miners Lamp Oxford Science Archive Phillips Thomas Phillips
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