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From: bsa@ncoast.UUCP (Brandon Allbery)
Newsgroups: net.startrek
Subject: Natural frequencies
Message-ID: <741@ncoast.UUCP>
Date: Tue, 18-Jun-85 20:28:52 EDT
Article-I.D.: ncoast.741
Posted: Tue Jun 18 20:28:52 1985
Date-Received: Sun, 23-Jun-85 08:31:43 EDT
References: <297@tilt.UUCP> <16200039@haddock.UUCP> <305@tilt.FUN> <120@sdencore.UUCP> <1562@orca.UUCP> <1471@watdcsu.UUCP>
Reply-To: bsa@ncoast.UUCP (Brandon Allbery)
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Organization: North Coast Xenix, Cleveland, OH
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Expires:

Quoted from <1471@watdcsu.UUCP> ["Re: Hailing Frequencies"], by herbie@watdcsu.UUCP (Herb Chong [DCS])...
+---------------
| In article <1562@orca.UUCP> andrew@orca.UUCP (Andrew Klossner) writes:
| >> I read somewhere that there are several "natural" frequencies.
| >> One is the vibration frequency of the Hydrogen atom.
| >
| >They're called natural frequencies because nature emits a good deal of
| >noise on these wavelengths.  Therefore these are exactly the
| >frequencies that you *don't* want to use for communications.
| >
| >  -=- Andrew Klossner   (decvax!tektronix!orca!andrew)       [UUCP]
| 
| there is at least one of the hydrogen vibrational frequencies that is
| relativey quite.  i think it's the 21 cm band.  anyway, project SETI
| 
| Herb Chong...

There are emissive frequencies and absorptive frequencies.  Hydrogen keeps
noise off the 21cm band, it being absorptive at that frequency.

--bsa
-- 
Brandon Allbery, Unix Consultant -- 6504 Chestnut Road, Independence, OH 44131
decvax!cwruecmp!ncoast!bsa; ncoast!bsa@case.csnet; +1 216 524 1416; 74106,1032
========================> Trekkies have Warped minds. <=======================