Abarometer is used in meteorology to determine air pressure and to predict the weather. evangelista torricelli invented the first mercury barometer in 1643 and stated that a. the unit of pressure measured with his barometer is called a torr. b. we live at the bottom of an ocean of air, which we know has weight. c. the thunder glass would be useful in agriculture and trade. d. the ability to foretell the weather should be left to god. plz science