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[Setup Time: 5 Min.] [Current Condition: Good]
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.
Neodymium and Sodium Lamps in J. Modern Physics, 2B
Box of Diffraction Glasses in J. Modern Physics, 2A
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