Need some smartness from U folks
Edward B Richards
zuu6k at JUNO.COM
Tue Oct 9 19:31:56 EDT 2007
Not me! One cycle is one cycle!
Ed K6UUZ
On Tue, 9 Oct 2007 15:14:51 -0700 "Jim Bromley, K7JEB" <k7jeb at COX.NET>
writes:
> Meir WF2U wrote:
> > 50 - 165 mc is the frequency of 50 to 165 mc. MC is
> > Megacycles, which is the frequency unit, 1 mc is
> > equivalent to 1000 kc (kilocycles), 1 kc is 1000 cycles.
> >
> > This was replaced when the European system (named
> > after Hertz) was rammed down our throats (1 Hz = 1 cycle,
> > 1 Khz = 1 kc 1 mHz = 1 mc and so on).
>
> This brings up a question that has puzzled me for quite
> some time: If one is looking at an oscilloscope display
> of a sine wave and wants to talk about an individual,
> complete movement of the trace in both the positive
> and negative directions, what does one call it?
>
> Previously one would have called it an individual *cycle*
> of the waveform. However, nowadays with our electrical
> units honoring dead Europeans so much, and particularly
> one Heinrich Hertz, should one use the honorifically correct
> term of *hertz-second* instead?
>
> The expiring mind of K7JEB wants to know.....
>
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