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Temperature Scales

One the the basic quantities in science is temperature, which is a measure up of the average amount of power of motion, or kinetic energy, a system contains. Temperatures space expressed utilizing scales that use units dubbed degrees. There space three scales used for report temperatures. Figure \(\PageIndex1\) compare the three temperature scales.

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For many purposes, the is acceptable to use 273 rather of 273.15 in Equation \refC2K.

Note the the Kelvin range does no use words degrees; a temperature the 295 K is spoken of together “two hundred ninety-five kelvin” and not “two hundreds ninety-five degrees Kelvin.”


Example \(\PageIndex2\): Room Temperature

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

Solution

First, we use Equation \refF2C to determine the temperature in levels Celsius:

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

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