Article View: sci.electronics
Article #19328Re: Whispering wires
From: Dr. Nethack is back
Date: Sat, 25 Jun 1988 02:18
Date: Sat, 25 Jun 1988 02:18
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In article <3025@mit-hermes.ai.mit.edu.AI.MIT.EDU>, jpexg@mit-hermes.ai.mit.edu.AI.MIT.EDU (John Purbrick) writes: > I was out in the country a few days ago and passed under some high-tension > wires. The power lines were emitting a sort of hissing, crackling sound, > with no detectable 60Hz component that I could hear. What causes this effect? > If it makes a difference, the weather that day was very hot and fairly humid. I live in the country, and there are some pretty beefy lines nearby.. they make all kinds of noise not relevant to 60Hz. The interesting thing is, it is periodic in nature, and has components that insects can hear before I can. (I.e. the crickets will stop chirping just prior to the noises that I hear...by say 1.5-2.5 seconds) I always wondered about long runs of wire and longwave radio waves, and the earth's electromagnetic fields. --- ARPA cogent!uop!todd@lll-winken.arpa BITNET ucdavis!uop!todd@ucbvax.BITNET Or something like that UUCP ucbvax!ucdavis!uop!todd anyway... UUNET uop!todd@uunet.uu.net
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!lll-winken!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!ucdavis!uop!todd From: todd@uop.edu (Dr. Nethack is back) Newsgroups: sci.electronics Subject: Re: Whispering wires Summary: well... Message-ID: <1579@uop.edu> Date: 25 Jun 88 02:18:24 GMT References: <3025@mit-hermes.ai.mit.edu.AI.MIT.EDU> Organization: Wise Guise of the Net Inc. Lines: 22