Re: INTERESTING LIVES and INTERESTING FACTS
*Did Thomas Edison really invent the light bulb? *
**The history of the light bulb reads like a story straight out of a
tabloid magazine. Contrary to what schools have taught for years, the
American icon, Thomas Edison, neither invented the light bulb, nor held
the first patent to the modern design of the light bulb.
Apparently, the we gave the esteemed Mr. Edison credit for the invention
solely because he owned a power company, later known as General
Electric, and a light bulb is just a bulb without a source of
electricity to light it. In reality, light bulbs used as electric lights
existed 50 years prior to Thomas Edison's 1879 patent date in the U.S.
Additionally, Joseph Swan, a British inventor, obtained the first patent
for the same light bulb in Britain one year prior to Edison's patent
date. Swan even publicly unveiled his carbon filament light bulb in New
Castle, England a minimum of 10 years before Edison shocked the world
with the announcement that he invented the first light bulb. Edison's
light bulb, in fact, was a carbon copy of Swan's light bulb.
How do two inventors, from two different countries the invent exact same
thing? Very easily, if one follows in the others footsteps. Swan's
initial findings from tinkering with carbon filament electric lighting,
and his preliminary designs, appeared in an article published by
Scientific American. Without a doubt, Edison had access to, and eagerly
read this article. Giving Mr. Edison the benefit of the doubt, and
stopping short of calling him a plagiarist, we can say that he invented
the light bulb by making vast improvements to Swan's published, yet
unperfected designs.
Swan, however, felt quite differently, as he watched Edison line his
pockets with money made from his invention, and took Edison to Court for
patent infringement. The British Courts stood by their patent award for
the light bulb to Swan, and Edison lost the suit. The British Courts
forced Edison, as part of the settlement, to name Swan a partner in his
British electric company. Eventually, Edison managed to acquire all of
Swans' interest in the newly renamed Edison and Swan United Electric
Company.
Edison fared no better back home in the U.S., where the U.S. Patent
Office already ruled, on October 8, 1883, that Edison's patents were
invalid, because he based them upon the earlier art of a gentleman named William Sawyer. To make matters worse, Swan sold his U.S. patent rights, in June 1882, to Brush Electric Company. This chain of events stripped Edison of all patent rights to the light bulb, and left him with no hope of purchasing any.
Edison dusted himself off, and went into business setting up a direct
current (DC) system of power distribution in New York City, and selling
the light bulbs that used this electricity. The light bulb business only
flickered between 1879 and 1889, until word-of-mouth advertising of
lower electricity costs fanned the flame, and business boomed. Edison's
client base rapidly expanded to three million customers over the span of
10 years.
Always at the center of controversy, Edison next found himself in
competition with Westinghouse for the sale of the first electric chair
to execute criminals to New York. Edison's chair used the DC system of
electricity, while Westinghouse used the AC (alternating current)
system, designed especially for it by Nickola Tesla. Both Edison and
Westinghouse emphasized the humanity of electrocution and the safety of
their electrical system as selling points when pitching their chairs to
New York.
Edison's bid for the sale of his chair was a mere formality and a ploy
to have the Westinghouse system of electricity chosen by New York for
the electric chair. He endorsed the Westinghouse AC system of
electricity as the system of choice to be used for the electric chair,
reasoning that the public would associate the Westinghouse AC system
with the killing power of the electric chair, and would see the system
as unsafe for household use.
Edison made this strategic move in anticipation that the public and
would flock to the safety of his DC system, as he needed increased sales
of the system, because of the great monetary investment he had made in
the system. Edison's plan succeeded, in part, as New York did select the
Westinghouse electric chair over his model.
What he could not take into account, was the fact that, unbelievably,
Westinghouse never tested the chair, and the chair failed on its "Maiden
Voyage." Though Edison's carefully laid plan went up in smoke, he did
get the last laugh, as for years people referred to being electrocuted
as being "Westinghoused," even though its chair was no longer in use.
It only took a matter of years before the public realized that the
benefits of the AC system far outweighed those of the DC system.
Edison's DC system took back seat, and the AC system took center stage.
People in the U.S. and worldwide chose the AC system over the DC system, because AC currents deliver electricity to power lines with greater
efficiency.
The DC system is no longer in use today.
DID YOU KNOW?
The first light bulbs lasted a mere 150 hours, and that ten years later, Edison introduced one that lasted 1,200 hours? *
*The average light bulb today lasts approximately 1,500 hours.
*
*
