The history of the barometer
The first barometer was invented in 1643, and it relied on mercury. The inventor was Torricelli, a student of Galileo, who lived in Florence, Italy. At first, he found that turning a glass tube full of mercury upside down, lead to the creation of a vacuum at the top. This might not seem like a significant discovery for people nowadays, but you have to bear in mind that at the time even great minds like Galileo believed that a complete vacuum was impossible to exist. Upon the analysis of the height of the mercury column, Torricelli noticed that there Read More