An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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hartree
  هارتری  
hartree
Fr.: hartree  

A unit of energy used in atomic and molecular physics; symbol Ha or Eh. It is defined as: 1 Ha = mee4/(4ε02ħ),
where me is the mass of electron, e its charge, ε0 the → permittivity of vacuum, and ħ → reduced Planck’s constant. Its value is 2 → rydbergs, or 4.3597 x 10-18 → joule, or 27.213 → electron-volts.

See also: Named for the British physicist and mathematician Douglas R. Hartree (1897-1958).