Transmission Grating
(click for grating info)

(click to toggle crosshairs visibility; move mouse over video to position crosshairs)
Instrument: AO Spencer Spectrometer

(click on image for a PDF of the Manual)
Spectrum Tube Lamps

(click on a lamp to rotate it into position or turn it on/off)
(choose increment and click arrows to adjust slit width)


Unknowns "A" and "B" are each one of the five Noble gases.
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He Ne Ar Kr Xe