except for the extreme danger in using raw H2 (remember the Hidnberg) I will
be very interested in seeing these results...please publish soon!
thanks
andy
-----Original Message-----
From: pinhole-discussion-admin@pinhole.com
[mailto:pinhole-discussion-admin@pinhole.com]On Behalf Of John Farrias
Sent: Monday, June 25, 2001 2:27 PM
To: Pinhole-Discussion@pinhole.com
Subject: [pinhole-discussion] gas eliminates reciprocity
to joebesse@aol.com-this is john,astronamers use hydrogen gas -the welding
type for exposures up to 10 hours with no reciprocity problems.i'm putting
together a small aperatus to test this for pinhole work .
Received on Mon Jun 25 15:52:17 2001
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