# Temperature in Constant volume gas thermometer.

• An jinsu
In summary, a constant volume gas thermometer is a type of thermometer that measures temperature by keeping the volume of gas within the thermometer constant. It works by using the principle that the pressure of a gas is directly proportional to its temperature, and has the advantage of being unaffected by changes in atmospheric pressure and having a wide measurement range. However, it also has limitations such as requiring a long time to reach thermal equilibrium and careful calibration, and can only measure temperatures within the range of the gas used. To calibrate it, known fixed points are used to determine corresponding pressure readings and create a temperature scale, which may need to be periodically recalibrated for accuracy.
An jinsu
In the constant volume gas thermometer,
T (°c)=[P(T)-P(f)]×100/[P(b)-P(f)]
(P(T) means gas pressure at T°c
P(b) and P(f) for the water's boiling point and freezing point)
Is it right?

An jinsu said:
In the constant volume gas thermometer,
T (°c)=[P(T)-P(f)]×100/[P(b)-P(f)]
(P(T) means gas pressure at T°c
P(b) and P(f) for the water's boiling point and freezing point)
Is it right?
Yes

## 1. What is a constant volume gas thermometer?

A constant volume gas thermometer is a type of thermometer that measures temperature by keeping the volume of gas within the thermometer constant. This is achieved by using a sealed container with a fixed volume, such as a bulb attached to a narrow tube.

## 2. How does a constant volume gas thermometer work?

A constant volume gas thermometer works by using the principle that the pressure of a gas is directly proportional to its temperature, as long as the volume and amount of gas remain constant. When the temperature of the gas inside the thermometer changes, the pressure of the gas also changes, which can be measured and converted into a temperature reading.

## 3. What are the advantages of using a constant volume gas thermometer?

One advantage of using a constant volume gas thermometer is that it is not affected by changes in atmospheric pressure, making it a more accurate method of temperature measurement compared to other types of thermometers. It also has a wide range of temperature measurement and can be used for both high and low temperatures.

## 4. What are the limitations of a constant volume gas thermometer?

One limitation of a constant volume gas thermometer is that it requires a long time to reach thermal equilibrium, especially for very low temperatures. It also requires careful calibration and may be affected by variations in the gas used or impurities in the gas. Additionally, it can only measure temperatures within the range of the gas used.

## 5. How is a constant volume gas thermometer calibrated?

A constant volume gas thermometer is calibrated by using known fixed points, such as the melting and boiling points of certain substances, to determine the corresponding pressure readings. These readings are then used to create a temperature scale for the thermometer. The thermometer may need to be recalibrated periodically to ensure accuracy.

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