Mercury and alcohol (typically ethanol or dyed alcohol) are two liquids that have been commonly used in thermometers. Mercury is often used in industrial thermometers due to its high thermal conductivity, while alcohol is used in household thermometers for safety reasons.
The two most commonly found liquids in liquid-in-glass thermometers are mercury and alcohol. Mercury thermometers are used for high-temperature applications, while alcohol thermometers are used for lower temperatures due to their lower toxicity.
Liquids used in thermometers typically have a high coefficient of thermal expansion, which means they expand or contract significantly with changes in temperature. This property allows the liquid to rise or fall within the thermometer tube and indicate the temperature accurately.
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They are used in thermometers to let us see the heat of the object you are measuring, if you use solid, it wouldn't be able to move up, if you use gas, it will fill the whole container, so it's better to use liquid
Mercury thermometers are still used in some industrial applications and laboratories due to their accuracy and ability to measure high temperatures. However, their use is declining due to the potential health and environmental risks associated with mercury exposure. In many situations, digital thermometers or other types of non-mercury thermometers are used instead.
The liquid in which a thermometer is typically dipped is called mercury. Mercury is commonly used in old-style thermometers, but newer thermometers may use alcohol or other liquids instead.
Mercury is used in thermometers.
Infrared thermometers are primarily used in the kitchen, for measuring the temperatures of hot liquids and solids. A good writeup on infrared thermometers and its method of working is on http://www.allqa.com/IR.html.There are some industrial applications as well.
iodine and Mercury
A thermometer is used to measure air temperature. Several types of thermometers can be used, such as liquid-in-glass thermometers, digital thermometers, and infrared thermometers.