Difference between revisions of "List of scientific units named after people"
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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.
Contents
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
- 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
- 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
Centimeter-gram-second system of units
- biot (Bi), electric current – Jean-Baptiste Biot
- 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
- 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 Louis Marie Poiseuille
- rayl, acoustic impedance – Lord 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, symbol rate – Emile Baudot
- Bark scale, psychoacoustical scale – Heinrich Barkhausen
- brewster (B), stress optic coefficient – David Brewster
- centimorgan, recombinantion frequency – Thomas Hunt Morgan
- curie (Ci), radioactivity – Marie and Pierre Curie
- dalton (Da), atomic mass – John Dalton
- decibel (dB) dimensionless proportions and ratios, e.g. relative power levels – Alexander Graham Bell
- degree Rankine (°R), temperature – William John Macquorn Rankine
- Dobson unit, atmospheric ozone – Gordon Dobson
- Erlang unit (erl), dimensionless volume of telecommunications traffic – Agner Krarup Erlang
- degree Fahrenheit (°F), temperature – Daniel Gabriel Fahrenheit
- fermi (fm), distance – Enrico Fermi
- 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
- siegbahn (xu), distance, – Manne Siegbahn
- Scoville units, capsaicin content of chili peppers – Wilbur Scoville
- 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
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
- darcy (D), permeability, – Henry Darcy
- einstein (E), photochemistry – Albert Einstein
- poncelet (p), power – Jean-Victor Poncelet
- faraday (Fd), electrical charge – Michael Faraday
- hartley (Hart), information – Ralph Hartley
See also
- List of eponyms
- Lists of etymologies
- List of unusual units of measurement
- List of humorous units of measurementid:Daftar eponim besaran satuan
he:יחידות מידה על שם אישים ja:人名に由来する物理単位 fi:Luettelo henkilöiden mukaan nimetyistä tieteellisistä yksiköistä hi:लोगों के नाम पर रखी वैज्ञानिक इकाइयों की सूची
