Re: [ATM] Ronchi quiz

["Jeff Baldwin" <bald@centurytel.net>]

Ever seen spiders spin webs after being given LSD?  I think your mirror has 
a problem.  It's kinda cool, isn't it?  Is it glued to another board that 
expands and contracts at a different rate than you glass?
JBald

Jeff and Glenda Baldwin
Beaver WA
http://home.centurytel.net/bald

----- Original Message ----- 
From: "Dale Eason" <atmpob@yahoo.com>
To: <atm@atmlist.net>
Sent: Tuesday, January 31, 2006 8:13 PM
Subject: [ATM] Ronchi quiz


>
> I thought ronchi users might like to take a stab at
> the this image.  It is from a 16 inch mirror in
> progress. It is pollished out.  Can any tell me what
> they think is going on?  I know and will tell you in a
> few days.  I wonder if anyone has ever seen anything
> like it.  The position of the ronchi screen is very
> close to the ROC.
>
> http://home.comcast.net/~doeason/DDavis/ronchi.jpg
>
> A clue is in the file name.  One other on the list
> might recognize the image.
>
> Next is a Foucault image taken at the same ROC.  It
> may help you to interpret the image.  The main purpose
> of the foucault image is to show that it is a mirror
> eventhough it has many faults.
>
> http://home.comcast.net/~doeason/DDavis/foucault1.jpg
>
>
> Dale Eason
>
>
>
>
>
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