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From: gcb1@ukc.UUCP (G.C.Blair)
Newsgroups: net.research
Subject: Re: Telescopes and parabolic mirrors
Message-ID: <479@ukc.UUCP>
Date: Wed, 11-Dec-85 08:08:16 EST
Article-I.D.: ukc.479
Posted: Wed Dec 11 08:08:16 1985
Date-Received: Fri, 13-Dec-85 20:33:51 EST
References: <531@philabs.UUCP>
Organization: U of Kent at Canterbury, Canterbury, UK
Lines: 15

> Keywords:mirror using pressurized sheet
> 
> 
>    ... is a paraboloid to within 6% upto half the radius of the sheet.
>    Thus darkening the area beyond 0.5r looks as if it would give
>    close approximation to a paraboloid. ......
> 
> 
>     ihnp4!philabs!ams

Thank goodness someone's at last found documented evidence to substantiate
my casual use of the word "parabolic"! Can we now please end this discussion?
			Grant C Blair  (unintentional initiator)

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