List of scientists whose names are used as SI units

List of scientists whose names are used as SI units is the list of those scientists whose names are assigned as the names of the international units by the International Committee for Weights and Measures. The International System of Units (abbreviated SI from French: Système international d'unités) is the most widely used system of units of measurement. There are seven base units and 22 derived units (excluding compound units). These units are used both in science and in commerce. Two of the base units and 17 of the derived units are named after scientists. By this convention, their names are immortalised. Below is the list of the scientists whose names are used as SI units.

Scientists and the SI units

Base unit

Derived unit

(colour legend)

Name	Life	Nationality	Quantity	SI unit	Image
André-Marie Ampère	1775–1836	French	Electric current	ampere (A) (Base unit)
William Thomson, 1st Baron Kelvin	1824–1907	British (Scottish)	Thermodynamic temperature	kelvin (K) (Base unit)
Blaise Pascal	1623–1662	French	Pressure	pascal (Pa)
Isaac Newton	1643–1727	British (English)	Force	newton (N)
Anders Celsius	1701–1744	Swedish	Temperature	degree Celsius (°C)
Charles-Augustin de Coulomb	1736–1806	French	Electric charge	coulomb (C)
James Watt	1736–1819	British (Scottish)	Power	watt (W)
Alessandro Volta	1745–1827	Italian	Electric potential	volt (V)
Georg Simon Ohm	1789–1855	German	Electrical resistance	ohm (Ω)
Michael Faraday	1791–1867	British (English)	Capacitance	farad (F)
Joseph Henry	1797–1878	American	Inductance	henry (H)
Wilhelm Eduard Weber	1804–1891	German	Magnetic flux	weber (Wb)
Ernst Werner von Siemens	1816–1892	German	Conductance	siemens (S)
James Prescott Joule	1818–1889	British (English)	Energy	joule (J)
Antoine Henri Becquerel	1852–1908	French	Radioactivity	becquerel (Bq)
Nikola Tesla	1856–1943	Serbian-American	Magnetic flux density	tesla (T)
Heinrich Rudolf Hertz	1857–1894	German	Frequency	hertz (Hz)
Rolf Maximilian Sievert	1896–1966	Swedish	Dose equivalent of radiation	sievert (Sv)
Louis Harold Gray	1905–1965	British (English)	Absorbed dose of radiation	gray (Gy)

Napier and Bell

Napier and decibel are two dimensionless units used to define relative amplitudes in logarithmic scales. They are not SI units, but their usage together with SI units is permitted.

Name	Life	Nationality	Quantity	Unit	Image
John Napier	1550–1617	British (Scottish)	Magnitude (natural logarithmic)	neper (Np)
Alexander Graham Bell	1847–1922	British (Scottish)-American	Magnitude (common logarithmic)	bel (B)

See also

• List of scientists whose names are used as non SI units
• List of scientists whose names are used in chemical element names
• List of scientists whose names are used in physical constants

External links

• Physical dimensions of the units