freebsd at edvax.de
Tue Nov 17 20:39:19 UTC 2009
On Tue, 17 Nov 2009 19:58:04 +0100, cpghost <cpghost at cordula.ws> wrote:
> One pure electron a day keeps the plague away...
>  http://en.wikipedia.org/wiki/Capacitor_plague
> Sorry, couldn't resist. ;-)
I'm a doctor, not a resistor. So I couldn't resist, too.
Electricity is actually made up of extremely tiny
particles called electrons, that you cannot see
with the naked eye unless you have been drinking.
But Edison's greatest achievement came in 1879,
when he invented the electric company. Edison's
design was a brilliant adaptation of the simple
electrical circuit: the electric company sends
electricity through a wire to a customer, then
immediately gets the electricity back through
another wire, then (this is the brilliant part)
sends it right back to the customer again.
This means that an electric company can sell a
customer the same batch of electricity thousands
of times a day and never get caught, since very
few customers take the time to examine their
In fact the last year any new electricity was
generated in the United States was 1937; the
electric companies have been merely re-selling it
ever since, which is why they have so much free
time to apply for rate increases.
Here is a simple experiment that will teach you an
important electrical lesson: On a cool, dry day,
scuff your feet along a carpet, then reach your
hand into a friend's mouth and touch one of his
dental fillings. Did you notice how your friend
twitched violently and cried out in pain? This
teaches us that electricity can be a very powerful
force, but we must never use it to hurt others
unless we need to learn an important electrical
It also teaches us how an electrical circuit works.
When you scuffed your feet, you picked up batches
of "electrons", which are very small objects that
carpet manufacturers weave into carpets so they will
attract dirt. The electrons travel through your
bloodstream and collect in your finger, where they
form a spark that leaps to your friend's filling,
then travels down to his feet and back into the
carpet, thus completing the circuit.
-- Dave Barry: "The Taming Of The Screw"
And: Yes, I know it's OT, but it makes electricity problems
look easier because you can now easily understand them. :-)
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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