Bohr's Orbits

The plot shows stationary de Broglie waves in the Bohr model of the hydrogen atom. The electron, behaving as a wave, is stable in orbits containing an integer number of wavelengths. This model was an early precursor of the quantum theory.



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The de Broglie's relation is , and the allowed wavelengths for a stable orbit obey the condition , where is the wavelength, is the radius, and .
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