On 2020-12-27 6:27 p.m., chuckrr wrote:
Well even thoughe electricity flowing through a wire is somewhat slower
than the speed of light, exactly how much slower
is something I do not know about. this install
order called for the use of a 100 foot cable. The result was that the
newly installed processor complex was unable to synch
up with the rest of the switch. Nobody knew why. I calculated that
at the speed of light, the 12.352 mHz clock signal would be
late at the new processor by around half of a cycle.
it is legendary that Rear Admiral Grace Hopper, (the Computer genius who
is credited with the early computer language COBAL) used to had out
little pieces of wire, cut to the length that would take one Nanosecond
to travel. "This Gentlemen is a Nanosecond".
she was of course attempting to get computer designers to make the
interconnects shorter, as that would allow faster computers. as well as
explaining lag in satellite communications.
https://en.wikipedia.org/wiki/Grace_Hopper#Anecdotes
--
Charles MacDonald VA3CPY Stittsville Ontario
[email protected] Just Beyond the Fringe
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