Measurement and Uncertainty

The uncertainty expressed in the same units as the measurement.

How close a measurement is to the true or accepted value.

One of the seven fundamental SI units.

Adjusting an instrument so that it gives accurate measurements.

A quantity calculated from one or more measured quantities.

A unit formed by combining SI base units.

The process of determining how measurement uncertainties combine during calculations.

Zeros before the first non-zero digit; they are not significant.

A number together with a unit describing a physical quantity.

An error caused by viewing a scale from the wrong angle.