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Re: lsp at nf_sympatico.ca

At 3:48 PM -0500 1/29/98, Aquatic Plants Digest wrote:

>2. Does the pane of glass interfere with the transmission of vital
>components of the light source. I know that glass windows absorb, or
>deflect UV rays. Is there another, more useful material, such as

Glass generally will pass UV rays, while plastics do not. This is why UV
erasable EPROM chips come in a glass ceramic package with a glass window
for erasing the data by exposing it to UV. Plastic windows won't work,
because they won't pass the UV. Too bad, because a plastic package would be
much cheaper.


Paul Nicholson               Electronic Imaging Systems, Inc.
TEL 805 532 1068             5148 Commerce Avenue, Unit F
FAX 805 532 1065             Moorpark, CA 93021 U.S.A.
paul at eisusa_com		     http://www.eisusa.com