Unit of Temperature

A body can either be hot or cold depending upon the amount of heat energy, and this hotness and coldness measurement of a body is known as Temperature. And the units in which temperature is measured is called unit of temperature. The thermometer is the device that is most commonly used to measure the unit of temperature.

SI unit of temperature:

The seven fundamental quantities whose units are fundamentally defined in physics are known as SI units. The SI unit of temperature is known as Kelvin.

So, The SI unit of temperature is called kelvin. ‘K’ is the kelvin symbol used in physics. The SI unit of temperature kelvin was named after physicist Lord Kelvin. If x is the numerical value of measured temperature then the temperature of that body in the SI unit of temperature is written as x°K

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Other Unit of Temperature:

Apart from the SI unit of temperature which is Kelvin, measured Temperature is also written in some other most common units. These common unit of temperature are:

Celsius is also one of the unit of temperature. Its denoted by °C

Fahrenheit is also one of the unit of temperature. Its denoted by ℉

Rankine is another most common unit of temperature. Its denoted by °Ra

Reaumur is another unit of temperature and Its denoted by °Re

So, these were the most common unit of temperature other than the SI unit of temperature kelvin.

Scale Ranges of unit of Temperature:

The boiling point and freezing point of temperature is best shown with a different unit of temperature in the below table as.

 Scale Factor Celsius scale Reaumur scale Fahrenheit scale Kelvin scale Rankine scale The boiling point of water at 1 atmosphere. 100 80 212 373.15 671.67 The freezing point of water at 1 atmosphere. 0 0 32 273.15 491.67

Relation between the different units of temperature:

This various unit of temperature are related to each other, and if we have a temperature measurement in one unit, we can convert that measurement into another unit of temperature using the following conversions.

The SI unit of temperature Kelvin and another unit of temperature Celsius are related as °K=℃+273.15

Fahrenheit and Celsius unit of temperature are related as ℉=9/5℃+32

Rankine and Fahrenheit unit of temperature are related as °R=℉+459.67

So, By using these conversions we can convert from one unit of temperature to another unit of temperature.

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