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Temperature Scales

One of the basic quantities in scientific research is temperature, which is a measure up of the typical amount of energy of motion, or kinetic energy, a system contains. Temperatures are expressed using scales that use units referred to as degrees. There space three scales offered for reporting temperatures. Figure \(\PageIndex1\) compare the three temperature scales.

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For many purposes, the is agree to usage 273 instead of 273.15 in Equation \refC2K.

Note that the Kelvin scale does not use the word degrees; a temperature that 295 K is spoken of together “two hundreds ninety-five kelvin” and not “two hundred ninety-five degrees Kelvin.”

Example \(\PageIndex2\): Room Temperature

If the common room temperature is 72.0°F, what is room temperature in levels Celsius and also kelvin?


First, we use Equation \refF2C to recognize the temperature in degrees Celsius:

\<\beginalign* ^\circC &= (72.0-32)\times \dfrac59 \\<5pt> &= 40.0\times \dfrac59 \\<5pt> &= 22.2^\circC \endalign*\>

Then we usage Equation \refC2K to identify the temperature in the Kelvin scale: