History
Mercury is distributed in the form of nugget and composition of minerals that is why people are using it long ago. Most spread using of mercury is linked with mirrors. They consisted of 70% from tin and of 30% from mercury. Alloys of mercury and metal are called amalgams. The value of mercury for science invaluable. People began to produce the first accurate measuring devices with mercury. Even some physical quantities fixed firmly on the properties of mercury: millimeter mercury, a unit of ohms of resistance.
Nowadays
Amalgams of cadmium and silver used in the dental industry for the seals. Mercury still has a great demand for use in thermometers. While the mercury easily dissolves most metals, is not in step with the reaction metals used in doping steel, which allows to transport it to the ordinary steel containers. The main use of mercury is in the chloral-alkali industry, where it makes cathodes.
