Niels Bohr
Niels Bohr, Danish physicist, used the planetary model of the atom to explain the atomic spectrum and size of the hydrogen atom. His many contributions to the development of atomic physics and quantum mechanics; his personal influence on many students and colleagues; and his personal integrity, especially in the face of Nazi oppression, earned him a prominent place in history. (credit: Unknown Author, via Wikimedia Commons)
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"OpenStax College, Bohr’s Theory of the Hydrogen Atom. January 28, 2013."
http://cnx.org/content/m42596/latest/
OpenStax CNX
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