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

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...

In 2019, four of the seven SI base units specified in the International System of Quantities were redefined in terms of natural physical constants, rather...

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...

biologically active substances). International units as used in pharmacology are not part of the International System of Units (SI). Biologics are medications...

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 metre...

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...

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

This system underlies the International System of Units (SI) but does not itself determine the units of measurement used for the quantities. The system is...

The system was developed because of the difficulties in measuring and expressing astronomical data in International System of Units (SI units). In particular...

metric system is a decimal-based system of measurement. The current international standard for the metric system is the International System of Units (Système...

The foot–pound–second system (FPS system) is a system of units built on three fundamental units: the foot for length, the (avoirdupois) pound for either...

traceability to the International System of Units (SI). Metrology is the science of developing nationally and internationally accepted units of measurement....

are the units of the International System of Units (SI). By extension they include units of electromagnetism from the CGS and SI units systems, and other...

a coherent system where a small number of units of measure were defined as base units, and all other units of measure, called derived units, were defined...

Gaussian units constitute a metric system of physical units. This system is the most common of the several electromagnetic unit systems based on cgs...

International System of Units (SI). This system reduces all physical measurements to a mathematical combination of seven base units. The science of measurement...

fashion in terms of the base units are called derived units. In the International System of Units (SI), there are seven base units: kilogram, metre,...

system of quantities has equations that relate quantities and the associated system of units has corresponding base units, with only one unit for each...

The SI base units are the standard units of measurement defined by the International System of Units (SI) for the seven base quantities of what is now...

The other units used are multiples or divisions of these 3. Unit of frequency Orders of magnitude (time) "The International System of Units – 9th edition...

The International System of Electrical and Magnetic Units is an obsolete system of units used for measuring electrical and magnetic quantities. It was...

natural unit systems are measurement systems for which selected physical constants have been set to 1 through nondimensionalization of physical units. For...

SI derived units are units of measurement derived from the seven SI base units specified by the International System of Units (SI). They can be expressed...

Gs), is a unit of measurement of magnetic induction, also known as magnetic flux density. The unit is part of the Gaussian system of units, which inherited...

sciences, the International System of Units (SI) This disambiguation page lists articles associated with the title International system. If an internal...

of light itself is a single physical constant. Since May 2019, all of the units in the International System of Units have been redefined in terms of fixed...

The atomic units are a system of natural units of measurement that is especially convenient for calculations in atomic physics and related scientific fields...

B8—Factors for Units Listed Alphabetically". NIST Guide for the Use of the International System of Units (SI) (9th ed.). {{cite book}}: |work= ignored (help)...

symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled...