Liquid Metal Used In Thermometers

Silver liquid indicates that the thermometer contains mercury while red liquid is alcohol to which red coloring has been added.

Liquid metal used in thermometers.

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

It is the only metal that is liquid at room temperature. Another substance used in glass thermometers is alcohol. A thermometer has two important elements. Mercury is the only one in liquid state at room temperature.

And 2 some means of converting this. Lastly you do not need an external power source like a battery or electricity to run a mercury thermometer. Although uncommon in modern thermometers a clear color indicates water. 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.

Function the liquid in a thermometer typically stays in a bulb at the bottom of the device. Hence the slightest change in temperature is notable when it s used in a thermometer. In liquid in metal thermometers also referred to as liquid filled thermometers a liquid is used as a thermometric substance in the same way as in liquid in glass thermometers. 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.

Most metals are good conductors of heat and they are solids at room temperature.