Facts about Electricity
What in the world is electricity? And where does it go after it leaves
the toaster? 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 stick your finger 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 teach them an
important electrical lesson. It also teaches us how an electrical circuit
works, when you scuffed your feet, you picked up a batch of
"electrons," which are very small objects that carpet
manufactures weave into carpets so they will attract dirt. The electrons
travel through your blood stream 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.
AMAZING ELECTRONIC FACT If you scuffed your feet long enough without
touching anything, you would build up so many electrons that your finger
would explode! But this is nothing to worry about, unless you have
carpeting.
Although we modern persons tend to take our electric lights, radios,
mixers, etc. for granted, hundreds of years ago people did not have any of
these things, which is just as well because there was no place to plug
them in. Then along came the first Electrical Pioneer, Benjamin Franklin,
who flew a kite in a lightning storm and received a serious electrical
shock. This proved that lightning was powered by the same force as
carpets, but it also damaged Franklin's brain so severely that he started
speaking only in incomprehensible maxims, such as, "A penny saved is
penny earned." Eventually, he had to be given a job running the post
office.
After Franklin, came a herd of Electrical Pioneers whose names have
become part of our electrical terminology Myron Volt, Mary Louise Amp,
James Watt, Bob Transformer, etc. These pioneers conducted many important
electrical experiments. For example, in 1780 Luigi Galvani discovered
(this is the truth) that when he attached two different kinds of metal to
the leg of a frog, an electrical current developed and the frog's leg
kicked, even though it was no longer actually attached to the frog, which
was dead anyway. Galvani's discovery led to enormous advances in the field
of amphibian medicine. Today, skilled veterinary surgeons can take a frog
that has been seriously injured or killed, implant pieces of metal in its
muscles, and watch it hop back into the pond just like a normal frog,
except for the fact that it sinks like a stone.
But the greatest Electrical Pioneer of all was Thomas Edison, who was a
brilliant inventor despite the fact that he had little formal education
and lived in New Jersey. Edison's first major invention, in 1877, was the
phonograph, which could soon be found in thousands of American homes,
where it basically just sat until 1923, when the record was invented.
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 consumers take the time to examine their
electricity closely. In fact, the last year in which 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.
Today, thanks to men like Edison and Franklin, and frogs like Galvani's,
we receive almost unlimited benefits from electricity. For example, in the
past decade scientists developed the laser, an electronic appliance that
emits a beam of light so powerful that it can vaporize a bulldozer 2,000
yards away, yet so precise that doctors can use it to perform delicate
operations on the human eyeball, provided they remember to change the
power setting from "VAPORIZE BULLDOZER" to "DELICATE."