The advantages of liquid silver mercury (mercury) mainly include the following aspects:
High sensitivity: Mercury has a high expansion coefficient when the temperature changes, and can expand or contract rapidly, which makes the mercury thermometer very sensitive to temperature changes.
Wide measurement range: Mercury has a boiling point of up to 356.7 degrees Celsius, which can measure high temperatures without boiling at high temperatures like alcohol, so it is suitable for high temperature measurement.
Low cost: Mercury is a relatively cheap material, which makes the production cost of thermometers low.
High durability: Mercury thermometers do not require external power sources such as batteries or electricity, are simple and durable, and are very convenient to use.
However, liquid silver mercury (mercury) also has some disadvantages:
Health risks: Mercury is a neurotoxin that can cause serious health hazards if it comes into contact with the skin or its vapor is inhaled. Therefore, many countries have begun to phase out mercury thermometers and switch to safer alternatives such as digital thermometers.