Gmail Calendar Documents Reader Web more »
Recently Visited Groups | Help | Sign in
Google Groups Home
rec.photo.equipment
About this group
Subscribe to this group
This is a Usenet group - learn more
Message from discussion need heat absorbing filter info
The group you are posting to is a Usenet group. Messages posted to this group will make your email address visible to anyone on the Internet.
Your reply message has not been sent.
Your post was successful
 
From:
To:
Cc:
Followup To:
Add Cc | Add Followup-to | Edit Subject
Subject:
Validation:
For verification purposes please type the characters you see in the picture below or the numbers you hear by clicking the accessibility icon. Listen and type the numbers you hear
 
Jim  
View profile  
 More options Sep 2 2004, 7:56 pm
Newsgroups: rec.photo.equipment
From: "Jim" <jb...@cfw.com>
Date: Thu, 2 Sep 2004 05:56:20 -0400
Local: Thurs, Sep 2 2004 7:56 pm
Subject: need heat absorbing filter info
Reply to author | Forward | Print | View thread | Show original | Report this message | Find messages by this author
Can someone help me with some specific information I need concerning the
heat absorbing filter used in Kodak slide projectors, or failing that, the
heat absorbing filters used in enlargers?

I need to know the infrared cutoff wavelength of these.  I suspect that
these are basicly a "low pass" filter for all UV and visual wavelengths, but
where would the cutoff be:  880nm?, lower, or ??

thanks
Jim
jb...@cfw.com


    Reply to author    Forward  
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
Create a group - Google Groups - Google Home - Terms of Service - Privacy Policy
©2009 Google