Invented in 1643 by Italian physicist Evangelista Torricelli, the primary barometer layout used water. Before long, Torricelli replaced water with mercury, since the toxic material is drastically heavier than water. The barogram is set on a cylindrical drum that rotates in a uniform speed of 1 rotation for each https://wall-hanging89011.blog-eye.com/13322693/considerations-to-know-about-vintage-barometer