This is a list of scientific units named after
people.
For other lists of eponyms (names derived
from people) see eponym.
Note that by convention, the name of the unit
is properly written in all-lowercase, but
its abbreviation is capitalized.
== SI base units ==
ampere (A), electric current – André-Marie
Ampère
kelvin (K), thermodynamic temperature – Lord
Kelvin
== SI derived unit ==
becquerel (Bq), radioactivity – Henri Becquerel
degree Celsius (°C), temperature – Anders
Celsius
coulomb (C), electric charge – Charles-Augustin
de Coulomb
decibel (dB), ratio – Alexander Graham Bell
farad (F), capacitance – Michael Faraday
gray (Gy), absorbed dose of radiation – Louis
Harold Gray
henry (H), inductance – Joseph Henry
hertz (Hz), frequency – Heinrich Rudolf
Hertz
joule (J), energy, work, heat – James Prescott
Joule
newton (N), force – Isaac Newton
ohm (Ω), electrical resistance – Georg
Ohm
pascal (Pa), pressure – Blaise Pascal
Rayl or Rayleigh (Rayl), acoustic impedance
– Lord Rayleigh
siemens (S), electrical conductance – Werner
von Siemens
sievert (Sv), radiation dose equivalent – Rolf
Sievert
tesla (T), magnetic flux density – Nikola
Tesla
volt (V), electric potential, electromotive
force – Alessandro Volta
watt (W), power, radiant flux – James Watt
weber (Wb), magnetic flux – Wilhelm Eduard
Weber
== Centimetre–gram–second system of units
==
biot (Bi), electric current – Jean-Baptiste
Biot
buckingham (B), electric quadrupole moment
– A. David Buckingham
debye (D), electric dipole moment – Peter
Debye
eotvos (E), gravitational gradient – Loránd
Eötvös
galileo (Gal), acceleration – Galileo Galilei
gauss (G or Gs), magnetic flux density – Carl
Friedrich Gauss
gilbert (Gb), magnetomotive force – William
Gilbert
goeppert-mayer (GM), two-photon absorption
cross section – Maria Goeppert-Mayer
kayser (kayser), wavenumber – Heinrich Kayser
maxwell (Mx), magnetic flux – James Clerk
Maxwell
oersted (Oe), magnetic field strength – Hans
Christian Ørsted
poise (P), dynamic viscosity – Jean Léonard
Marie Poiseuille
Rayl or Rayleigh (Rayl), acoustic impedance
– John William Strutt, 3rd Baron Rayleigh
rayleigh (R), photon flux – Robert John
Strutt, 4th Baron Rayleigh
stokes (S or St), kinematic viscosity – George
Gabriel Stokes
=== 
No longer in use ===
franklin (Fr), electric charge – Benjamin
Franklin
clausius (Cl), entropy – Rudolf Clausius
== Others ==
ångström (Å), distance – Anders Jonas
Ångström
baud (Bd), symbol rate – Emile Baudot
Bark scale, psychoacoustical scale – Heinrich
Barkhausen
brewster (B), stress optic coefficient – David
Brewster
centimorgan (cM), recombination frequency
– Thomas Hunt Morgan
curie (Ci), radioactivity – Marie and Pierre
Curie
dalton (Da), atomic mass – John Dalton
darcy (D), permeability, – Henry Darcy
decibel (dB) dimensionless proportions and
ratios, e.g. relative power levels – Alexander
Graham Bell
degree Fahrenheit (°F), temperature – Daniel
Gabriel Fahrenheit
degree Rankine (°R), temperature – William
John Macquorn Rankine
Dobson unit (DU), atmospheric ozone – Gordon
Dobson
erlang (E), dimensionless volume of telecommunications
traffic – Agner Krarup Erlang
fermi (fm), distance – Enrico Fermi
hartley (Hart), information – Ralph Hartley
Hounsfield scale, radiodensity – Godfrey
Newbold Hounsfield
jansky (Jy), electromagnetic flux – Karl
Jansky
langley (ly), solar radiation – Samuel Pierpont
Langley
langmuir (L), gas exposure dose – Irving
Langmuir
Mach number (Ma), relative speed – Ernst
Mach
neper (Np), relative power level – John
Napier
degree Öchsle (°Oe), density – Ferdinand
Öchsle
Rockwell scale (HR), indentation hardness
– Stanley Rockwell
röntgen (R), dosage of X-rays or gamma radiation
– Wilhelm Röntgen
Richter magnitude, earthquake power – Charles
Francis Richter
Scoville units, capsaicin content of chili
peppers – Wilbur Scoville
shannon (Sh), information – Claude Shannon
siegbahn (xu), distance – Manne Siegbahn
svedberg (S or Sv), sedimentation rate – Theodor
Svedberg
sverdrup (Sv), volume transport rate – Harald
Sverdrup
torr (Torr), pressure – Evangelista Torricelli
troland (Td), luminance (human eye) – Leonard
Troland
=== Natural unit systems ===
Planck units – Max Planck
Stoney units – George Stoney
=== 
No longer in use ===
Mercalli intensity scale, earthquake effects
– Giuseppe Mercalli
degree Réaumur (°R), temperature – René
Antoine Ferchault de Réaumur
degree Delisle (°D), temperature – Joseph-Nicolas
Delisle
degree Newton (°N), temperature – Isaac
Newton
degree Rømer (°Rø), temperature – Ole
Rømer
degree Baumé (°Bé), density – Antoine
Baumé
einstein (E), photochemistry – Albert Einstein
poncelet (p), power – Jean-Victor Poncelet
faraday (Fd), electrical charge – Michael
Faraday
== 
See also ==
List of eponyms
Lists of etymologies
List of obsolete units of measurement
List of unusual units of measurement
List of humorous units of measurement
List of scientists whose names are used as
SI units
List of scientists whose names are used as
non SI units
