Date: Wed Oct 29 13:09:00 2008

Author: Zani, Gerald

Subject: Re: absorption spectra

Post:

Here is the correct link:

http://tinyurl.com/5s48lr

- JZ

-----Original Message-----
From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On
Behalf Of Zani, Gerald
Sent: Wednesday, October 29, 2008 1:06 PM
To: tap-l@lists.ncsu.edu
Subject: Re: [tap-l] absorption spectra

Shine white light through small, clear bottles of anti-freeze, Ty-D-Bol
and Pine-Sol and view the absorption spectra through a grating.

http://www.physics.brown.edu/physics/demopages/Demo/optics/demo/6f401xx.
htm

Can also use Dididium glass from a glass blower.

- JZ

-----Original Message-----
From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On
Behalf Of Anthony Lapinski
Sent: Wednesday, October 29, 2008 12:26 PM
To: tap-l@lists.ncsu.edu; phys-l@carnot.physics.buffalo.edu
Subject: [tap-l] absorption spectra

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
materials?




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