What is a thermometer?

A thermometer is a device that measures temperature. Temperature can be defined as measurable heat or cold. It can be expressed as a mathematical representation of a column. Other units for measuring temperature are Celsius (˚C), Kelvin (K), and Fahrenheit (˚F).

A thermometer is a device that measures temperature or temperature difference (how hot or cold a substance is). Thermometers are frequently used in meteorological, medical, and scientific research, as well as process monitoring in technology and industry.
A thermometer consists of two important parts.

Temperature sensor
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Temperature sensor
Record the temperature change. For example, a bulb in a mercury-in-glass thermometer or a pyrometer sensor in an infrared thermometer.

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It consists of a numerical value expressed in Celsius, Fahrenheit, or Kelvin. For example, you can view the scale displayed on a mercury-in-glass thermometer or a digital readout of an infrared model. use a thermometer

The main function of a thermometer is to measure the temperature of a body, object, medium, or atmosphere. 

Here are some examples of the uses and applications of thermometers.

household use
laboratory purpose
in the car
in Industry
the restaurant

The thermometer at home
Before bathing, use a thermometer to check the temperature of the water. It is also used to check the temperature of food before cooking.
The temperature of grills, ovens, and other heating devices can be monitored with a thermometer to prevent accidents and burns. 

Laboratory thermometer
Thermometers are widely used in laboratories for research purposes.
It is used to determine the temperature of the solution. It is also used to measure atmospheric or room temperature to perform experiments.

Using a thermometer in a car
Infrared thermometers can measure the temperature of cables, pipes, or other equipment for automated repairs and improved maintenance. It is also used to measure the temperature of various auto parts such as tires, hoods, engines, transmissions, brakes, and clutches.

Use of thermometers in industry
It is important to check for air leaks and poorly insulated areas to check safety standards in various industries. The need for insulation can be determined by measuring the temperature of the inner and outer surfaces of the wall, and if the difference is large, the wall must be properly insulated.

Thermometer used in the restaurant
Larger restaurants use thermometers to monitor oil temperature and use cooking and baking tools. Testing the sample with an infrared thermometer will give you the results of the entire batch.
The thermometer checks whether the semi-solid coating has reached the temperature necessary to kill all microorganisms.