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A 1809 etching by Thomas Rowlandson depicting Davy giving a chemical lecture at the Surrey Institute. Humphry Davy, 1st Baronet (December 17, 1778 - May 29, 1829) was an English chemist and inventor. In 1798, he joined the Pneumatic Institution which had been established for the purpose of investigating the medical powers of factitious airs and gases. One of his first discoveries was that pure nitrous oxide (laughing gas) is perfectly respirable. His Researches, Chemical and Philosophical, chiefly concerning Nitrous Oxide, published in 1800, secured his reputation as a chemist. In 1801 he was engaged as lecturer at the new formed Royal Institution and gave his first lecture on Galvanism. His lectures included spectacular and sometimes dangerous chemical demonstrations., and the young and handsome chemist soon acquired a huge female following. He was a pioneer in the field of electrolysis using the voltaic pile to split up common compounds and thus prepare many new elements. He discover...