How Does a Thermometer Work?

 

Image Source:- Testo India

A thermometer is a temperature measurement device. When a thermometer is immersed in a given solution or substance, the mercury within it begins to rise. Thermometers too are of different types; therefore, the working to differs.

Let's take an example of an infrared thermometer and see how it works.

How does an infrared thermometer work?

Infrared thermometers use a lens to focus the infrared light emitting from the object onto a detector known as a thermopile—a thermopile forms when some thermocouples connect in a series.

As soon as the thermopile surface comes in contact with infrared radiation, it is absorbed and converted into heat. The device measures this heat in the form of temperature and displays it on the screen.

This process is completed within seconds and gives out accurately recorded readings that are finally displayed on the screen.

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