Liquid Metal Used In Thermometers
It is the only metal that is liquid at room temperature.
Liquid metal used in thermometers. Hence the slightest change in temperature is notable when it s used in a thermometer. Mercury can be used in thermometers. Mercury is the only one in liquid state at room temperature. A thermometer is a device that measures temperature or a temperature gradient the degree of hotness or coldness of an object.
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. Lastly you do not need an external power source like a battery or electricity to run a mercury thermometer. A thermometer has two important elements.
1 a temperature sensor e g. Another substance used in glass thermometers is alcohol. Because liquids expand as temperatures rise the. Although uncommon in modern thermometers a clear color indicates water.
It s used in thermometers because it has high coefficient of expansion. In addition mercury is the only metal that is a liquid at room temperature making it an attractive candidate. It is also cheap to acquire and very accurate at measuring high temperatures. Silver liquid indicates that the thermometer contains mercury while red liquid is alcohol to which red coloring has been added.
And 2 some means of converting this.