Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/5/84; site philabs.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!whuxl!whuxlm!akgua!gatech!seismo!cmcl2!philabs!ams
From: ams@philabs.UUCP (Ali Shaik)
Newsgroups: net.research
Subject: Re: Re: Telescopes and parabolic mirrors
Message-ID: <535@philabs.UUCP>
Date: Fri, 13-Dec-85 08:31:24 EST
Article-I.D.: philabs.535
Posted: Fri Dec 13 08:31:24 1985
Date-Received: Sun, 15-Dec-85 06:54:49 EST
References: <531@philabs.UUCP> <479@ukc.UUCP>
Organization: Philips Labs, Briarcliff Manor, NY
Lines: 27

> > 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)
> 
> Replies to ....{seismo or your link to Europe}!mcvax!ukc!gcb1

*** REPLACE THIS LINE WITH YOUR MESSAGE ***
         Don't be too sure! The shell stuff I looked up, it was
	 pointed out, was valid for small deflections, NORMAL
	 load....

	 Anybody out there got a good book on membranes?! The
	 problem seems interesting enough pursure further.    

	 Ali Shaik, ihnp4!philabs!ams