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From: John Woodgate
Subject: Re: Se Photocell "exhausted"?
Date: Tue, 24 Dec 2002 15:14:12 +0000
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Tue, 24 Dec 2002 16:45:11 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that Roger Lascelles
wrote (in <email@example.com
usnet.com.au>) about 'Se Photocell "exhausted"?', on Tue, 24 Dec 2002:
>My Father's 65 year old Weston meter is still working and the calibration
>hasn't drifted noticably in 60 odd years - it is still 2 f-stops low as
The selenium cells were sealed but not hermetic. Presumably Pa's hasn't
leaked enough oxygen in to cause trouble.
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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