The following examples show some basic functionality.
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The difference between and is a null combination. The result is a relative temperature.
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The average of , , and is an affine combination. The result is an absolute temperature.
The same holds for .
is an affine combination of and , the value of which depends on .
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The sum of four absolute temperatures is not a valid physical quantity. In this case, the temperature scales are different, so they are combined into the default scale, as set using the Units[UseSystem] or Units[UseUnit] commands. The default for this scale is the kelvin scale.
Dividing the sum by 4 yields the average of the four temperatures, which is a valid absolute temperature.
The following is a null combination.