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