Gaspard-Gustave de Coriolis died #OTD in 1843.
He is best known for his work on the supplementary forces that are detected in a rotating frame of reference, leading to the Coriolis effect. He was the first to apply the term travail (translated as "work") for the transfer of energy by a force acting through a distance, and he prefixed the factor ½ to Leibniz's concept of vis viva, thus specifying today's kinetic energy. via @wikipedia