power systems analysis field of electrical engineering, a per-unit system is the expression of system quantities as fractions of a defined base unit quantity...

centimetre–gram–second system of units (CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and...

parts-per-trillion (ppt, 10−12) and parts-per-quadrillion (ppq, 10−15). This notation is not part of the International System of Units (SI) system and its...

System of Units, internationally known by the abbreviation SI (from French Système international d'unités), is the modern form of the metric system and...

The metre, kilogram, second system of units, also known more briefly as MKS units or the MKS system, is a physical system of measurement based on the...

data blocks per unit time passing through a communication link in a data-transmission system. Common data rate units are multiples of bits per second (bit/s)...

imperial system of units, imperial system or imperial units (also known as British Imperial or Exchequer Standards of 1826) is the system of units first...

A system of units of measurement, also known as a system of units or system of measurement, is a collection of units of measurement and rules relating...

United States customary units form a system of measurement units commonly used in the United States and most U.S. territories, since being standardized...

(symbol: lx) is the unit of illuminance, or luminous flux per unit area, in the International System of Units (SI). It is equal to one lumen per square metre...