SI units

SI units
the internationally agreed system of units now in use for all scientific purposes. Based on the metre-kilogram-second system, SI units have seven base units and two supplementary units. Measurements of all other physical quantities are expressed in derived units, consisting of two or more base units. Base SI units and Derived SI units are listed having special names; all these units are defined in the dictionary.
Decimal multiples of SI units are expressed using specified prefixes; where possible a prefix representing 10 raised to a power that is a multiple of three should be used.

Medical dictionary. 2011.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Units (Unix) — Units is a Unix computer program for conversion of units of quantities. It has a database of measurements, including esoteric and historical measurements. This for instance allows conversion of velocities specified in furlongs per fortnight, and… …   Wikipedia

  • Units x Valéncia — Units per Valencia Presidente Manuel Lapuente Monedero Secretario/a general Carles Choví Fundación Noviembre de 2008[1 …   Wikipedia Español

  • Units of information — are a way of measuring a quantity of information or an entropy. Primary units Small amount of information just as logarithm of number of states.According to Shannon, The choice of a logarithmic base corresponds to the choice of a unit for… …   Wikipedia

  • Units — es una aplicación informática para UNIX y derivados, utilizada para convertir unidades. En su versión 1.85 tiene soporte para 2.438 unidades, 71 prefijos y 32 unidades no lineales. Incluye algunas unidades de interés histórico y otras esotéricas; …   Wikipedia Español

  • Units per al progrés — Président Jaume Ramond Fondé …   Wikipédia en Français

  • Units of measurement — Weights and measures redirects here. For other uses, see Weights and measures (disambiguation). The former Weights and Measures office in Seven Sisters, London A unit of measurement is a definite magnitude of a physical quantity, defined and… …   Wikipedia

  • Units conversion by factor-label — Many, if not most, parameters and measurements in the physical sciences and engineering are expressed as a numerical quantity and a corresponding dimensional unit; for example: 1000 kg/m³, 100 kPa/bar, 50 miles per hour, 1000 Btu/lb. Converting… …   Wikipedia

  • Units of Measure Directive — The Units of Measure Directive, sometimes referred to as the Metric Directive and more formally known as Council Directive 80/181/EEC of 20 December 1979 on the approximation of the laws of the Member States relating to units of measurement and… …   Wikipedia

  • Units of energy — Because energy is defined via work, the SI unit for energy is the same as the unit of work ndash; the joule (J), named in honour of James Prescott Joule and his experiments on the mechanical equivalent of heat. In slightly more fundamental terms …   Wikipedia

  • Units of transportation measurement — The units of transportation measurement describes the units of measure to measure the quantity and traffic of transportation used in transportation statistics, planning, and their related fields. Units of Transportation Quantity The currently… …   Wikipedia

  • Units of textile measurement — Textile is measured in various units, such as: the denier and tex (linear mass density of fibres), super S (fineness of wool fiber), worst count, and yield (the inverse of denier and tex). Yarn is spun thread used for knitting, weaving, or sewing …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”