Sir Humphry Davy

(1778—1829) chemist and inventor

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Sir Humphry Davy Rolleston (1862—1944) physician


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British chemist, who studied gases at the Pneumatic Institute in Bristol, where he discovered the anaesthetic properties of dinitrogen oxide (nitrous oxide). He moved to the Royal Institution, London, in 1801 and five years later isolated potassium and sodium by electrolysis. He also prepared barium, boron, calcium, and strontium as well as proving that chlorine and iodine are elements. In 1816 he invented the Davy lamp.

Subjects: Science and Mathematics — Arts and Humanities.

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