When both mercury and gold are present in the amalgam, the liquid metal is used for the extraction of gold from rocks, as gold dissolves into mercury, making it easier for the two substances to be isolated through the process of mercury distillation amalgams with gold, silver, zinc, and cadmium. As an electrical conductor, mercury is used in the electrical switches of thermostats and alarm clocks.This ultraviolet light has the ability to destroy germs Mercury vapor is used in the production of compact fluorescent light bulbs when a spark passes through mercury in a tube, it gives out a blue to ultraviolet light used in fluorescent lamps. However, due to safety concerns, these types of instruments are being replaced with digital alternatives
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