Uses of mercury
Mercury is used in medical and scientific products like thermometers, barometers and manometers. It is also used in scientific research application and for dental restoration. Mercury is also used in lighting, when electricity passed through the mercury vapor in the phosphortube, it produce short-wave of uv light which is then causes the phosphor to fluoresce, making visible light. Mercury is also used for treatment in the past; it is used to treat syphilis, which is the most deadly disease in the 15 century. At that time antibiotics was not invented, so mercury was use to cure syphilis.