List of scientists whose names are used as SI units

Source: Wikipedia

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^[1] (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.^[2] By this convention, their names are immortalised. Below is the list of the scientists whose names are used as SI units.

Base unit[Note 1]

Derived unit

(colour legend)

Name[3][4]	Life	Nationality	Quantity[5]	SI unit[Note 2]	Image
André-Marie Ampère[6]	1775–1836	French	Electric current [7]	ampere (A) (Base unit)
William Thomson, 1st Baron Kelvin[8]	1824–1907	British (Scottish)	Thermodynamic temperature[9]	kelvin (K) (Base unit)
Blaise Pascal[10]	1623–1662	French	Pressure[11]	pascal (Pa)
Isaac Newton[12]	1643–1727	British (English)	Force[13]	newton (N)
Anders Celsius[14]	1701–1744	Swedish	Temperature[15]	degree Celsius (°C)
Charles-Augustin de Coulomb[16]	1736–1806	French	Electric charge[17]	coulomb (C)
James Watt[18]	1736–1819	British (Scottish)	Power[19]	watt (W)
Alessandro Volta [20]	1745–1827	Italian	Electric potential[21]	volt (V)
Georg Simon Ohm[22]	1789–1855	German	Electrical resistance[23]	ohm (Ω)
Michael Faraday[24]	1791–1867	British (English)	Capacitance[25]	farad (F)
Joseph Henry[26]	1797–1878	American	Inductance[27]	henry (H)
Wilhelm Eduard Weber[28]	1804–1891	German	Magnetic flux[29]	weber (Wb)
Ernst Werner von Siemens [30]	1816–1892	German	Conductance[31]	siemens (S)
James Prescott Joule[32]	1818–1889	British (English)	Energy[33]	joule (J)
Antoine Henri Becquerel[34]	1852–1908	French	Radioactivity[35]	becquerel (Bq)
Nikola Tesla [36]	1856–1943	Serbian[Note 3]-American	Magnetic flux density[37]	tesla (T)
Heinrich Rudolf Hertz[38]	1857–1894	German	Frequency[39]	hertz (Hz)
Rolf Maximilian Sievert[40]	1896–1966	Swedish	Dose equivalent of radiation[41]	sievert (Sv)
Louis Harold Gray [42]	1905–1965	British (English)	Absorbed dose of radiation[43]	gray (Gy)

Napier and Bell

Napier and decibel are two dimensionless units used to define relative amplitudes in logarithmic scales.^{[Note 4]} They are not SI units, but their usage together with SI units is permitted.

Name	Life	Nationality	Quantity	Unit	Image
John Napier[44]	1550–1617	British (Scottish)	Magnitude (natural logarithmic) [45]	neper (Np)
Alexander Graham Bell[46]	1847–1922	British (Scottish)-American	Magnitude (common logarithmic)[47]	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