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Re: [Phys-l] absorption spectra


Have them look at the sky in daylight. But not directly at the sun!
(You knew that bit).


On Wed, Oct 29, 2008 at 9:26 AM, Anthony Lapinski
<> wrote:
In my high school astronomy class, I will be discussing light and spectra
soon. I wish to do a lab/activity where students can analyze various light
sources with a diffraction grating. It is easy to show continuous spectra
with a candle or light bulb, and emission spectra with gas tubes. I am
looking for a way to show an absorption spectrum. In the past I had
students use colored filters to cover an incandescent light bulb. This
sort of mimics the atmosphere of a star.

Does anyone have other ways to show absorption spectra using simple

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