What you are describing is not the bit, it is the encoding. Bits are not
actually on the wire. The actual bits of tangible data are only generated
on the hosts at either end of the connection, and any internetworking device
between links that needs to store or regenerate the signals. Everything in
between is just signals.
----- Original Message -----
From: ElephantChild <[EMAIL PROTECTED]>
To: whatshakin <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Saturday, October 07, 2000 1:18 AM
Subject: Re: Ethernet Trivia
> On Fri, 6 Oct 2000, whatshakin wrote:
>
> > This makes it sound like there is actually something tangible being put
on
> > the wire. Bits are merely ones and zeros which are signaled by
different
> > voltages etc in the line encoding.
> >
> > Bits do not occupy line space.
>
> Sorry. They do.
>
> A bit on the wire is a pulse or a series of pulses.
>
> As such, it has a leading edge, a trailing edge, and a duration.
>
> Both edges move through the wire at the speed of light in the material
> the wire is made of.
>
> The length of the bit is the distance between the leading and trailing
> edges.
>
> That distance is the speed of light multiplied by the duration of the
> bit, or divided by the transmission speed in bits per second.
>
> (snip)
>
> > BTW, my calculations for the speed of light resulted in 299,793,100 m/s
>
> That's in a hard vacuum. In metals and other good conductors, it's
> usually between 1/2 and 2/3 that value.
>
> So yes, Virginia, there is a Santa^H^H^H^H^Hbit length. :-)
>
> --
> Bungee jumping and skydiving are for wimps. If you want to experience
> true gut-wrenching terror, have children. --Dusty Rhoades.
>
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