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From: drw@culdev1.UUCP (Dale Worley)
Newsgroups: rec.audio,sci.physics,sci.electronics
Subject: Mercury Filled Speaker Wire
Message-ID: <1538@culdev1.UUCP>
Date: Fri, 18-Sep-87 11:17:55 EDT
Article-I.D.: culdev1.1538
Posted: Fri Sep 18 11:17:55 1987
Date-Received: Sun, 20-Sep-87 03:03:44 EDT
Organization: Cullinet Software, Westwood, MA, USA
Lines: 15
Xref: mnetor rec.audio:3320 sci.physics:2205 sci.electronics:1353

larry@kitty.UUCP (Larry Lippman) writes:
> 	Actually, you have touched upon a grain of truth.  Mercury-filled
> tubing - expecially of the silicone rubber variety - makes a simple, but
> effective position transducer.  As the cable is stretched, both the length
> of the mercury column increases and its diameter decreases in the affected
> area; this results in greater electrical resistance as the tubing is
> stretched.

Though, since the resistance of the cables is around 0.1 ohm, and the
speakers are around 4 ohms (they used to be, has this changed?  and is
this DC or AC resistance?), the bulk of the voltage drop is across the
speakers.  Or is even such a small effect (if it has an audio period)
audible?

Dale