Liquid Metal Used In Thermometers

It is also cheap to acquire and very accurate at measuring high temperatures.

Liquid metal used in thermometers.

It s used in thermometers because it has high coefficient of expansion. Mercury can be used in thermometers. In addition mercury is the only metal that is a liquid at room temperature making it an attractive candidate. Mercury is the only one in liquid state at room temperature.

It is the only metal that is liquid at room temperature. Because liquids expand as temperatures rise the. Hence the slightest change in temperature is notable when it s used in a thermometer. Function the liquid in a thermometer typically stays in a bulb at the bottom of the device.

A thermometer is a device that measures temperature or a temperature gradient the degree of hotness or coldness of an object. Silver liquid indicates that the thermometer contains mercury while red liquid is alcohol to which red coloring has been added. However it is not the thermal expansion of the liquid that is measured but rather the increase in pressure that goes hand in hand with an increase in temperature. Another substance used in glass thermometers is alcohol.

1 a temperature sensor e g. The bulb of a mercury in glass thermometer or the pyrometric sensor in an infrared thermometer in which some change occurs with a change in temperature. And 2 some means of converting this. Although uncommon in modern thermometers a clear color indicates water.

Lastly you do not need an external power source like a battery or electricity to run a mercury thermometer.