The process of checking and correcting the performance of a measuring instrument or device against a commonly accepted standard.
A method used by scientists for writing extremely large or small numbers by representing them as a number between 1 and 10 multiplied by a power of 10. Instead of writing 0.0007713, the preferred scientific notation is 7.713 · 10 −4.
An abbreviation of the French term Système International d'Unités, or International System of Units. Based on the metric system, SI is the system of measurement units in use by scientists worldwide.
Numbers included in a measurement, using all certain numbers along with the first uncertain number.
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