The barometer is one of the basic instruments of meteorology. It is used to measure air pressure. The word comes from a combination of two Greek words: "baro," meaning weight, and "meter," meaning ...

Lum Woodruff, a resident of Ann Arbor, Michigan, who reported weather observations to the Smithsonian Institution, patented a portable barometer that proved to be extremely popular. Its key feature ...

M.LÉON TEISSERENC DE BORT has invented an aneroid mirror barometer, which is described in a recent number of La Nature. It is based on a method analogous to that well-known since the researches of ...