whats with this love of kaffiene?

[Tim]

Tim:
>> Sounds like they need to, also, employ someone who used to be a teacher.
>> Someone who's used to the idea of having to train, as the main thing
>> that they do.

Gene Heskett:
> On the face of it, that is a good idea.  Till that old saw about
> "those who can't do, teach" comes crawling up out of the back of my
> mind, having had it quite amply demonstrated in my nearly 57 years of
> chasing electrons for a living.  The other corollary to that is that
> those who can do, and then try to teach, have a hell of a time trying
> to reduce the language to something that actually works for TV-101
> classes. 

;-)  Generally, we had the opposite problem at college.  Teachers who
learnt electronics at college, then became teachers, were worse than
those who worked in the industry, then became teachers.  For one thing,
they knew the difference between theory and practice.

I could never get any lecturer to give a sane explanation of AM.  They'd
tell us that the carrier was a fixed amplitude.  I'd argue that AM was
modulating the carrier, therefor it has a varying one.  I'd even
demonstrate by cranking the pot up and down to give a 1 Hertz AM.  None
of them could give a reasonable explanation.  Yes, they could give
strange ones, but none that fitted the situation demonstrated.

Yes, I know that you can put a 1 kHz signal on top of a 1 MHz one, and
then filter one away from the other.  Theoretically, that's fine.  But
it doesn't get around the fact that I had grabbed the pot and changed
the carrier level.  It sure didn't have a constant carrier level in my
hands.

-- 
(This box runs FC6, my others run FC4 & FC5, in case that's
 important to the thread.)

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