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Angular Momentum Quantization
In the Bohr model, the wavelength associated with the electron is given by theDeBroglie relationship
and the standing wave condition that circumference = whole number of wavelengths. In the hydrogenic case, the number n is the principal quantum number.
These can be combined to get an expression for the angular momentum of the electron in orbit. (Note that this assumes a circular orbit, a generally unwarranted assumption.)
 | Use in Bohr orbit |
Thus L is not only conserved, but constrained to discrete values by the quantum number n. This quantization of angular momentum is a crucial result and can be used in determining the Bohr orbit radii and Bohr energies.
Eli Priyatna 30 Apr, 2011--
Source: http://basistik.blogspot.com/2011/04/animated-physics-angular-momentum.html
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