What are the four main parts of a thermometer?

Thermometer is mainly composed of temperature sensitive element, temperature dial, background container and measuring pointer or digital display.

1. Temperature sensing element: The temperature sensing element is the most critical part of the thermometer and is used to sense the temperature change of the surrounding environment. Commonly used temperature sensitive components are: mercury column, alcohol column, silicon sensor, etc. The physical characteristics of these sensitive elements will change with the change of temperature, thus providing temperature information.

2. Temperature dial: The temperature dial is used to display the measured temperature value. It can be a linear scale or a digital scale. Common temperature scales include degrees Celsius (C) and degrees Fahrenheit (F). The scale value on the dial is calibrated according to the physical change of the temperature sensitive element.

3. Background container: The background container is the environmental space where the temperature changes around the temperature sensitive element. It is usually a sealed container to protect sensitive components from the external environment. Background container can prevent temperature sensitive elements from being affected by wind, humidity, radiation and other factors, and ensure the accuracy of measurement.

4. Measuring pointer or digital display: The measuring pointer or digital display is used to indicate and display the measured temperature value. In some traditional thermometers, the pointer is used to point to the corresponding temperature value on the dial. In modern electronic thermometers, digital displays will be used to directly display the temperature value.

These four parts work together to enable the thermometer to accurately measure and display the temperature of the environment. The temperature sensing element senses the temperature change of the environment, the background container provides the controlled environment space, the temperature dial is used to display the temperature value, and the measuring pointer or digital display indicates the measuring result in real time. Through the combination of these components, the thermometer has become an important tool for people to understand and monitor the ambient temperature.

Importance of thermometer

1. Temperature sensing element: The temperature sensing element is the most critical part of the thermometer and is used to sense the temperature change of the surrounding environment. Commonly used temperature sensitive components are: mercury column, alcohol column, silicon sensor, etc. The physical characteristics of these sensitive elements will change with the change of temperature, thus providing temperature information.

2. Temperature dial: The temperature dial is used to display the measured temperature value. It can be a linear scale or a digital scale. Common temperature scales include degrees Celsius (C) and degrees Fahrenheit (F). The scale value on the dial is calibrated according to the physical change of the temperature sensitive element.

3. Background container: The background container is the environmental space where the temperature changes around the temperature sensitive element. It is usually a sealed container to protect sensitive components from the external environment. Background container can prevent temperature sensitive elements from being affected by wind, humidity, radiation and other factors, and ensure the accuracy of measurement.