Physlet Illustration: Absorption in the Bohr Model |
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In this simulation, an electron is shown
orbiting a proton in the Bohr model for hydrogen in level 2. Full spectrum light is
incident upon the atom. The user may change the final level of the
electron between 3 and 6. After a short time, a photon of the appropriate
wavelength is absorbed and the electron "jumps" to the chosen level. The
absorption spectrum is shown. How does the
wavelength of the absorbed photon depend on the starting and ending orbital
levels?
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Hints:
- Try different ending levels for the electron. How does the
choice of level affect the absorption spectrum?
- How are the wavelengths related to those in the emission case for the
same levels?
- Why does the spectral line appear black?
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Reference
See Walker, Sections 31-3
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Illustration written by Mario Belloni and Chuck
Niederriter
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