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Re: ATM Beginner: dictionary pse

To: "ATM" <atm@shore.net>
Subject: Re: ATM Beginner: dictionary pse
From: Michael Peck <mpeck1@ix.netcom.com>
Date: Sun, 04 May 2003 10:31:12 -0500
In-Reply-To: <00b701c31231$8a931ba0$e76036d5@pqh9u>
References: <3EB4BC57.50005@arrl.net>
Reply-To: Michael Peck <mpeck1@ix.netcom.com>
Sender: owner-atm@shore.net

At 13:36 5/4/2003 +0200, Stathis Kafalis wrote:

>ROC: Radius of Curvature. For mirrrors = 2* focal length
>COC: Working Center over Center

COC is also (and more commonly) the paraxial center of curvature, which is 
the point in space where paraxial rays come to focus when the source is 
also at the CoC.

Most atm's misuse the terms RoC and CoC. One is a length and the other a 
point in space. For some reason the distinction seems to elude most people.

Mike Peck

What's a pse anyway?

------
Michael Peck
mpeck1@ix.netcom.com

Follow-Ups:
- Re: ATM Beginner: dictionary pse
  - From: Guy Brandenburg <gfbranden@earthlink.net>
- Re: ATM Beginner: dictionary pse
  - From: Guy Brandenburg <gfbranden@earthlink.net>

References:
- ATM Beginner: dictionary pse
  - From: Goran Hosinsky <ea8yu@arrl.net>
- Re: ATM Beginner: dictionary pse
  - From: "Stathis Kafalis" <dobsonstathis@planet-interkom.de>

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