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canvas prints black and white canvas prints portrait canvas prints engraving canvas prints people canvas prints england canvas prints anesthetic canvas prints vertical canvas prints scientist canvas prints men canvas prints chemistry canvas prints archival canvas prints adult canvas prints cornwall canvas prints humphry davy canvas prints electrolysis canvas prints

drawings black and white drawings portrait drawings engraving drawings people drawings england drawings anesthetic drawings vertical drawings scientist drawings men drawings chemistry drawings archival drawings adult drawings cornwall drawings humphry davy drawings electrolysis drawings

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Humphry Davy, British chemist, 19th century. Born in Penzance, Cornwall, 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. Engraving after a portrait by James Lonsdale (1777-1839). (Photo by Oxford Science Archive/Print Collector/Getty Images)

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