How Do Mercury Barometers Work?

Answer

Mercury barometers work by measuring air pressure. They are constructed using a long glass tube, with a small reservoir at the bottom full of mercury. When the atmospheric pressure rises, more force is put to bear on the reservoir of mercury, which then forces the mercury to a higher level of the tube. Mercury barometers have millimetre markings along the length of their tubes to enable easy reading of the pressure.
Explore this Topic
Barometers show what the pressure of the air is. They are a long tube that sits in a pool of mercury. The levels of the mercury in the tube adjust based on the ...
A mercury barometer is a tool that uses the element mercury to measure barometric (atmospheric) pressure to predict weather. Mercury is a metallic element that ...
A water-based barometer is a sealed glass container filled half-way with water. The container has a spout connected to it below the water line. The spout extends ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com