Encyclopedia > Bohr radius

Article Content

Bohr radius

In Bohr's model of the hydrogen atom, the Bohr radius (<math>a_0</math>) is the radius of the lowest energy orbit:

<math>a_0 = {{4\pi\epsilon_0\hbar^2}\over{m_e e^2}}</math>

where:

<math>\epsilon_0</math> is the permittivity of vacuum

<math>\hbar</math> is the Planck's constant

<math>m_e</math> is the electron rest mass

and

<math>e</math> is the elementary charge

It has a value of 5.29189379×10^-11 m, or about half an angstrom.

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

Thomas a Kempis

... began at Augsburg in 1486. The first English translation (1502) was by William Atkinson and Margaret, mother of Henry VII., who did the fourth book. Translations ...