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#Mon Aug 09 12:16:52 CEST 2010
Slide__GsIZ4KOfEd-WfYQ0GneCwQ_footer=Source\: Lecture Notes I. Bars, University of South Carolina
Slide__GsIZ4KOfEd-WfYQ0GneCwQ_title=<p>In the <q>old quantum theory</q> ...</p>
Slide__GsIZ4KOfEd-WfYQ0GneCwQ_subTitle=... the atom is viewed like a small planet model where the electrons are circling around the atomic nucleus. Their later (by de Broglie) discovered wave character comes into play in that only such orbits are allowed where an integer number of periods may be placed (in the figure three; shown are two different states of oscillation each). <p>This is Bohr's atomic model, and the <i>quantum condition</i> (in the later wave picture the integer number of periods per electronic orbit) is named today mostly after <i>Bohr</i> and <i>Sommerfeld</i>.</p>