Re: [Phys-l] absorption spectra

[Bernard Cleyet <bernardcleyet@redshift.com>]

The version I saw, now not possible, was absorption by the vapour of  
an open beaker of Hg.  I think the source was a low p. Hg lamp and  
the view was shadow from reflected by a white card -- this is, like  
JD's, the terrestrial version of D. MacI.'s*

* The superior demo., because it includes astronomy, the point of the  
exercise.

bc's memory from a half cent. is not that good.


On 2008, Oct 29, , at 10:25, John Denker wrote:

> On 10/29/2008 09:26 AM, Anthony Lapinski wrote:
>
> > Does anyone have other ways to show absorption spectra using simple
> > materials?
>
> Here's a simple low-tech setup
>   http://faraday.physics.uiowa.edu/modern/7B11.15.htm
>
> It goes on to list about a dozen references, mostly to TPT.
>
> I like this version better, using a recently-turned-off
> sodium lamp to provide a sample of sodium vapor:
>   http://sciencedemonstrations.fas.harvard.edu/icb/icb.do? 
> keyword=k16940&panel=icb.pagecontent269371%3Ar%241%3Fname% 
> 3Dindepth.html%2Cicb.pagecontent269362%3Ar%241%3Fname% 
> 3Dcomplete.html&pageid=icb.page102827&pageContentId=icb.pagecontent269 
> 366&view=view.do&viewParam_name=indepth.html#a_icb_pagecontent269366
>
>
>
> These and lots more like them are easy to find by
> googling.
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