Hartree Atomic Unit
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A Hartree Atomic Unit is a Natural Units System that ...
- See: Absorbance, Systems of Measurement, Natural Units, Atomic Physics, Computational Chemistry, Douglas Hartree, Physical Constants, Reduced Planck Constant, National Institute of Standards And Technology, Elementary Charge, Bohr Radius, Electron Mass.
References
2021
- (Wikipedia, 2021) ⇒ https://en.wikipedia.org/wiki/Hartree_atomic_units Retrieved:2021-6-13.
- The Hartree atomic units are a system of natural units of measurement which is especially convenient for atomic physics and computational chemistry calculations. They are named after the physicist Douglas Hartree. In this system the numerical values of the following four fundamental physical constants are all unity by definition:
- Reduced Planck constant: [math]\displaystyle{ \hbar = 1 }[/math] , also known as the atomic unit of action * Elementary charge: [math]\displaystyle{ e = 1 }[/math] , also known as the atomic unit of charge * Bohr radius: [math]\displaystyle{ a_0 = 1 }[/math] , also known as the atomic unit of length * Electron mass: [math]\displaystyle{ m_\text{e} = 1 }[/math] , also known as the atomic unit of mass [1]
- In Hartree atomic units, the speed of light is approximately atomic units of velocity. Atomic units are often abbreviated "a.u." or "au", not to be confused with the same abbreviation used also for astronomical units, arbitrary units, and absorbance units in other contexts.
- The Hartree atomic units are a system of natural units of measurement which is especially convenient for atomic physics and computational chemistry calculations. They are named after the physicist Douglas Hartree. In this system the numerical values of the following four fundamental physical constants are all unity by definition:
- ↑ Not to be confused with the unified atomic mass unit.