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Re: ATM Expansion calc.

To: atm@shore.net
Subject: Re: ATM Expansion calc.
From: Andy Saulietis <iss@pvtnetworks.net>
Date: Sat, 08 Apr 2000 19:45:58 -0600
In-Reply-To: <38EFDABA.DD209A18@mwt.net>
Reply-To: Andy Saulietis <iss@pvtnetworks.net>
Sender: owner-atm@shore.net


Joe M writes,

>Now isn't this mirror over corrected now? the center is much deeper
>relative to the edge than it was at ten degrees cooler.

If the glass is isotropic (CTE same in all deirctions) then
changing temp will not change the relative shape of the
mirror, just its focal lenghth. Assuming, of course, that the
mirror is thermally equalized at both temperatures.








Andy Saulietis
ISS Enterprises
39 Silver Fox Trail
Mayhill NM 88339
505-687-3067 voice
505-687-3021 fax, call voice or e-mail to set up
e-mail: iss@pvtnetworks.net

Follow-Ups:
- Re: ATM Expansion calc.
  - From: Joe Mayenschein <mayen1@mwt.net>

References:
- ATM Expansion calc.
  - From: Joe Mayenschein <mayen1@mwt.net>

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