This is the difference between the result of measurement X and the comparison value which may be the true or conventionally true value Xv, or the arithmetic average x of the results of a series of measurements. In the first case, the absolute error is said to be actual (dx = X – Xv); in the second case it is said to be apparent (dx = X – x).
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Why is temperature not a physical quantity like other measurement units?
Temperature is not a quantity in the strict sense of the term as the majority of other measurement units are. A quantity is something which can be increased or decreased, for example length, area, power output, etc. Measuring a quantity…