Lucien Vidie, French inventor, 1795.
© Science Museum / Science & Society Picture Library
Portrait of Lucien Vidie, the inventor of the aneroid ('fluidles') barometer. The idea of a fluidles barometer, opposed to one using using mercury, was first suggested by Gottfried Willhelm Leibniz in 1698 but it was not until 1843 that Vidie completed his model. In the 20th century aneroid barometers replaced mercury barometers in many metrological stations.