Antique and Vintage Barometers

Barometers are used to measure atmospheric pressure, but they were created in the 17th century when an Italian mathematician named Evangelista Torricelli, a former student of Galileo’s, devised the first artificial vacuum out of a glass tube filled with mercury. Subsequently, French philosophers René Descartes and Blaise Pascal used the instrument to determine altitude, but it was only by chance that scientists noticed that weather also...Continue Reading