Young, wave nature of light, interference experiment

"Absorption of Gases by Water and Other Liquids" by John Dalton.

John Dalton proposes Dalton's Law, which describes relationship between the components in a mixture of gases and the relative pressure each contributes to that of the overall mixture.

Henry Law, William Henry

Essai de statique chimique, Claude Berthollet

Discovery of Rhodium (Wollaston), Palladium (Wollaston), Iridium (Tennant), Osmium (Tennant)

29 November 1803 Birth of Johann Christian Andreas Doppler in Salzburg, Austria

Chronology 1802 - 1803 - 1804