Sujet
Humphry Davy, British chemist, 19th century. Creator: Unknown.
Légende
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). (Colorised black and white print).
Date
1800
Crédit
Photo12/Heritage Images/Oxford Science Archive
Notre référence
HRM25A12_211
Model release
NA
Property release
NA
Licence
Droits gérés
Format disponible
50,0Mo (4,0Mo) / 31,0cm x 40,4cm / 3661 x 4772 (300dpi)