Encyclopedia > Hartree energy

  Article Content

Hartree energy

The Hartree energy (symbol Eh) is a physical constant used as atomic unit of energy, named after physicist Douglas Hartree[?].

It has a value of twice the binding energy of the electron in the ground state of the hydrogen atom.

<math>E_h = {\hbar^2 \over {m_e a^2_0}}</math>
= 4.359 743 81(34) x 10-18J


<math>\hbar</math> is the Dirac's constant,
<math>m_e</math> is the electron rest mass
<math>a_0</math> is the Bohr radius

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
Main storage

... storage: In a computer, program-addressable storage from which instructions and other data may be loaded directly into registers for subsequent execution ...