GIA4715583: Scientific experiment: the calculation of the speed of sound, by Humboldt, Louis-Joseph Gay-Lussac (Louis Joseph Gay Lussac), Bouvard, Prony and Mathieu, which determine the time elapses between the perception of light and that of a gun shot, on the night of 22 June 1822, near Paris., Unknown Artist, (19th century) / Bridgeman Images