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Re: [ATM] convex secondary

To: atm@atmlist.net
Subject: Re: [ATM] convex secondary
From: Mark Holm <mdholm@telerama.com>
Date: Tue, 01 Mar 2005 22:59:39 -0500
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>
>
>I didn't like the compact fluorescenets because they
>> seemed to have two fringes very close to each other,
>> for easons I don't know.
>

The compact fluorescent tubes typically have more sophisticated 
phosphors for higher efficiency, and more pleasing color.  These have 
more and broader emission bands.  I have a very simple little 
spectroscope that shows the differences between different lamps quite 
clearly.

-- 
Mark Holm
mdholm@telerama.com


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