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Lecture 25: Measuring Light - Spectroscopy
Why does each element have its own unique spectral signature? how doe
emission lines and absorption lines arise? This lecture is the second
part of a two-part exploration of matter and light, looking at how the
unique spectral-line signatures of atoms are a reflection of their
internal electron energy-level structures. Topics include energy level
diagrams for atoms, excitation, de-excitation, and ionization. There
will be a short demonstration with gas-discharge tubes and slide-mounted
diffraction gratings. For podcast listeners, the last portion of the
class is the demo, for which we do not unfortunately have the resources
to videotape. Recorded 2007 Oct 25 in 1000 McPherson Lab on the
Columbus campus of The Ohio State University.
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By Richard Pogge
4.9
77 ratings
Why does each element have its own unique spectral signature? how doe
emission lines and absorption lines arise? This lecture is the second
part of a two-part exploration of matter and light, looking at how the
unique spectral-line signatures of atoms are a reflection of their
internal electron energy-level structures. Topics include energy level
diagrams for atoms, excitation, de-excitation, and ionization. There
will be a short demonstration with gas-discharge tubes and slide-mounted
diffraction gratings. For podcast listeners, the last portion of the
class is the demo, for which we do not unfortunately have the resources
to videotape. Recorded 2007 Oct 25 in 1000 McPherson Lab on the
Columbus campus of The Ohio State University.
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