Re: OT: Converting miles/km

On 23/09/24 01:50, J. J. Lodder wrote:

Peter Moylan <peter@pmoylan.org> wrote:

The one non-metric measurement that I find useful is "one foot per
nanosecond".

>
Impossible to go that fast,

Useful, though, to get an estimate of the time delays across the width
of a printed circuit board.
I'm not actually involved in high-speed electronics, but I think the
current rule of thumb is that the speed of signals on a printed circuit
board is about two-thirds of the speed in a vacuum.
--
Peter Moylan       peter@pmoylan.org    http://www.pmoylan.org
Newcastle, NSW