Scientific & Technical units named after people
unitsymbolpersonquantity measuredvalue
ampere A André-Marie Ampère electric current C/s
angstrom Å Anders Jonas Ångström length 10-10 m
baud-Jean-Maurice-Émile Baudot signal transmission speed 1 unit per second
becquerelBq Antoine-Henri Becquerel disintigration rate one disintigration per second
belB Alexander Graham Bell power comparison dimensionless
biot Bi Jean Baptiste Biot electric current 10 A
blondel -André-Eugène Blondel luminence p-1 cd·m-2
Bohr magneton-Niels Henrik David Bohrmagnetic momenteh/4pme
brewsterBSir David Brewsterstress-optical coefficient10-12 m2/N
Bubnoff unit-Serge von Bubnoffspeed (of erosion)10-6 m/year
clausius Cl Rudolf Julius Emanuel Clausius entropy cal/K
coulomb C Charles-Augustin de Coulomb electric charge A·s
curie Ci Marie and Pierre Curie disintigrtion rate 3.7× 1010 Bq
dalton- John Daltonmass 1/16 the mass of an oxygen-16 atom
darwin-Charles Darwinevolutionary change-
debey D Peter Joseph Wilhelm Debey electric dipole moment10-19 C·m
einstein EAlbert Einstein quanity of light one mole of photons
Eotvos unit E Roland, Baron von Eötvös gradient of acceleration 10-9 s-2
erlangrAgner Krarup Erlangcommunications traffic intensity-
farad F Michael Faraday electric capacitanceA·s/V
faraday FdMichael Faraday electric chargethe charge of a mole of electrons (about 9.65 × 104 C / mol)
fermi fm Enrico Fermi length 10e-15 m
franklin Fr Benjamin Franklin electric charge 3.33564× 10-10 C
fresnel-Augustin Jean Fresnelfrequency1012 Hz
gal -Galileo Galilei acceleration cm·s-2
gauss G Carl Friedrich Gauss magnetic induction 10-4 T
gilbert- William Gilbert electromotive force 10/4p A·turns
gray Gy L. H. Gray radiation dose J/kg
hartree-Douglas Rayner Hartreeenergyapproximately 27.21 eV
hefner candle -Friedrich Franz von Hefner-Alteneck luminous intensity 0.903 candle
henry H Joseph Henry inductanceV·s/A
hertz Hz Heinrich R. Hertz frequency1 cycle/second
jansky Jy Karl C. Jansky radio source strength 10-26 J/m2·
joule J James Prescott Joule energy kg·m2s-2
kayser K Heinrich Gustav Johannes Kayserwave number wavelength/cm
kelvin KWilliam Thompson, Lord Kelvin temperature -
lambert lam Johann Heinrich Lambert luminance lumen/cm2
langley -Samuel P. Langley energy flux per area cal/ cm2
mach M, MaErnst Mach speed [depends on the medium]
maxwell Mx, M James Clerk Maxwell magnetic flux 10-8 Wb
morgan-Thomas Hunt Morgangenetic distance (on a chromosome)-
neper NpJohn Napieramplitude comparison dimensionless
newton N Isaac Newton force kg·m·s-2
oersted Oe H. C. Oersted magnetic field strength maxwell/cm
ohm W George Simon Ohm electric resistance-
pascal Pa Blaise Pascal pressure N/m2
planck -Max K. E. L. Planck action J·s
poisePJean-Louis-Marie Poiseuille dynamic viscosity 0.1 Pa·s
poncelet-Jean Victor Ponceletpower-
rayl-J. W. Strutt, 3rd Lord Rayleighacoustic impedenceNs/m3
rayleigh-J. W. Strutt, 3rd Lord Rayleighluminous intensity106 photons /(cm)2 s
reyn -Osborne Reynolds dynamic viscosity 104·(1.45)-1 Pa·s
roentgenR William Conrad Röntgen radiation exposure 2.58 × 104 A·s/kg
rutherford rd Ernst Rutherford disintigration rate 106
rydberg RyJohannes Robert Rydberg energy approx. 2.425 × 10-28 J
sabin- Wallace Clement Sabine sound absorption -
savart -Félix Savart pitch interval 1/300 of an octave
siemens S Ernst Werner von Siemenselectric conductance W-1
sievert Sv R. M. Sievert dose equivalent of radiation J/kg
stokes StGeorge Stokes kinematic viscosity 10-4 m2/s
Svedberg STheodor S. Svedberg sedimentation coefficient (time) 10-13 s
sverdrup- Harald Ulrich Sverdrup flow 106 m3/s
talbot -William Henry Fox Talbot quantity of light lm·s
tesla T Nicola Tesla magnetic flux density kg/A·s2
torr -Evangelista Torricelli pressure 133.32 Pa
troland-Leonard T. Trolandretinal illuminationillumination on retina of a 1 cd/m2 light through a pupil of area 10-6
voltVAlessandro Voltapotential differenceW/A
wattW James Watt power J/s
weber Wb Wilhelm Eduard Weber magnetic flux V·s

For Celsius, Fahrenheit, etc., see Scientific & Technical scales named after people


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