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Student Gratings and Line Sources
# 7B10.10

Description: Pass out the 1" x 1" gratings to the students. These have 13,400 lines per inch. Turn one of the light sources. There is a single filament white light source and five discharge tubes: H, Ar, He, Hg, and Ne. -CAUTION: Turn off the power supply before changing to the next discharge tube.

Purchased/Built: purchased

Setup Time: 5 min

Quant. in Demo Room: 2

Source: Pasco Scientific

Demo References
The Video Encyclopedia of Physics Demonstrations Disc 25-01 Four spectral tubes and white light through a grating.
Hilton O-9b Line spectra are viewed through 13,400 lines/inch gratings.
Sutton L-102 Replica gratings are passed out, sources can be connected in series with an induction coil.

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