The Galileo barometer, invented by the Italian physicist and astronomer Galileo Galilei round 1643, is an easy but efficient gadget for measuring atmospheric stress. It consists of a glass tube, sealed at one finish, and full of a liquid, usually water or mercury. The open finish of the tube is positioned in a reservoir of the identical liquid, and the peak of the liquid within the tube is noticed.
The peak of the liquid within the tube is inversely proportional to the atmospheric stress. It is because the load of the liquid within the tube is balanced by the power exerted by the ambiance on the floor of the liquid within the reservoir. When the atmospheric stress will increase, the power exerted on the liquid within the reservoir will increase, which causes the liquid within the tube to rise. Conversely, when the atmospheric stress decreases, the power exerted on the liquid within the reservoir decreases, which causes the liquid within the tube to fall.