Henry Cavendish, while investigating “phlogisticated air” (atmospheric …
Years: 1785 - 1785
Henry Cavendish, while investigating “phlogisticated air” (atmospheric nitrogen), finds in 1785 that air contains a small proportion (slightly less than one percent) of a substance (now known to be argon) that is chemically less active than nitrogen.
His work, however, is soon forgotten.
