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From: jong@hounx.UUCP (J.LEE)
Newsgroups: rec.audio,sci.physics,sci.electronics
Subject: Re: Mercury Filled Speaker Wire
Message-ID: <1130@hounx.UUCP>
Date: Wed, 23-Sep-87 09:22:16 EDT
Article-I.D.: hounx.1130
Posted: Wed Sep 23 09:22:16 1987
Date-Received: Sat, 26-Sep-87 02:36:34 EDT
References: <1549@culdev1.UUCP>
Organization: AT&T Bell Laboratories, Holmdel
Lines: 16
Summary: Mercury Filled Speaker Wire
Xref: mnetor rec.audio:3388 sci.physics:2253 sci.electronics:1402

In article <1549@culdev1.UUCP>, drw@culdev1.UUCP (Dale Worley) writes:
> As long as we're debunking things, note that the "skin effect" (if
> it's the skin effect I know and love) involves a "penetration depth"
> measured in fractions of a wavelength.  Since the wavelength at 20kHz
> is ... hmmm ... 5 kilometers, it doesn't seem too significant.
> 

The wave length of 20 K Hz tone is 5 kilometers???
Nah.  The velocity of sound is about 300 m/s at room temperature.
This makes the wave length of 20 KHz sinusoid 0.015m (=300/20k)
or 1.5 cm (~0.6 in). Granted, this is still much larger than
most audio conductor diameter. As to whether this causes audible
phase dispersion or not, I am still not sure.  I am still
experimenting... .

Regards.    J Lee, Bell Labs, Holmdel, NJ.