Columbia University Physics Lecture Demonstrations


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7B11.17-21 Absorption Spectra

[Setup Time: 5 Min.] [Current Condition: Good]

Info

Two lamps show different absorption phenomena. In one bulb, neodymium oxide in the glass absorbs a band in the yellow; in the other, sodium vapor around the bulb absorbs the yellow spectral line. Students observe the spectra through diffraction glasses.

Parts List

Neodymium and Sodium Lamps in J. Modern Physics, 2B

Box of Diffraction Glasses in J. Modern Physics, 2A

Relevant Simulation

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Real-Life Examples

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