Can you imagine visiting your nerdy friend in his laboratory,
a peculiar scientist with human oddities. For example, for dinner each evening
he would enter his hotel restaurant and escorted to his table. He would then
proceed to wipe each utensil and dish with a clean napkin starting with the
knife; then with a new napkin would wipe down the spoon, and again with a new
napkin wipe down the fork – this was a daily routine.
Nevertheless, you’re in his laboratory, with all types of
odd-looking electrical equipment around you. Then, your friend, a tall thin man
walks up to you; he suddenly snaps his fingers, instantaneously a red fireball flame
looking substance is created on his fingertips. He rolls the fireball ball into
his hands and not for one second he is nervous about electricity flowing in and
out of his body. He now has your full
and focused attention and you’re astonished that the fireball doesn’t burn him.
He rolls it around, on his body, on his head, and then onto
your lap. Yikes! He picks up the fireball and places it into a wooden box, then
closes the cover. He opens the cover to
show you the inside of the box, there is nothing there – no trace of the
electrical red fireball ever existed!
Your friend is Nikola Tesla –
Tesla conducted this experiment several times during his
career; yet, no one has been able to duplicate mysterious experiment
“Before I put a sketch
on paper, the whole idea is worked out mentally. In my mind I change the
construction, make improvements, and even operate the device. Without ever
having drawn a sketch I can give the measurements of all parts to workmen, and
when completed all these parts will fit, just as certainly as though I had made
the actual drawings. It is immaterial to me whether I run my machine in my mind
or test it in my shop. The inventions I have conceived in this way have always
worked. In thirty years there has not been a single exception. My first
electric motor, the vacuum wireless light, my turbine engine and many other
devices have all been developed in exactly this way” - Tesla.
That's how 3-phase [polyphase] AC power was invented - in
Tesla’s head. Tesla is responsible for the 120 AC volt electrical systems that we
use today. Prior to AC, Edison’s DC power was predominant; although effective,
it was inefficient and difficult to transmit voltages over distances.
We all know that Thomas Edison invented the electric light bulb
and the equipment to light it, and that George Westinghouse built the world's
first hydroelectric power plant at Niagara Falls; both men knew Tesla. Tesla, a
Serbian immigrant, was the greatest electrical genius ever! In his early days, he
Edison - Tesla - Westinghouse |
Westinghouse was a railroad man, some of his inventions include
air brakes and railway signals. Later in
life, Westinghouse became interested in electrical systems and was convinced
that alternating current [AC] was better than DC for transmission, thus his
association with Tesla.
It started out with GE’s bid to electrify the Chicago Worlds
Fair in 1893 using Edison’s DC system. GE lost to Westinghouse, who proposed Tesla’s
AC system, and whose bid was 30% less costly. Furthermore, that same year, the
Niagara Falls Power Company decided to award Westinghouse [using Tesla’s
polyphase AC] to generate power from Niagara Falls to electrify Buffalo. Many
doubted that the falls could power all of Buffalo. By 1896 Buffalo was fully
lit, and it wasn't too long after that GE decided to dump DC systems and switch
to AC as well.
Back, earlier in 1892,
Tesla created a basic design for radio and in 1898 obtained a patent using the
design for a radio controlled boat. In 1898 at Madison Square Garden,
Tesla exhibited his radio-controlled boat to the public for the first time.
The boat had an
antenna, which received the radio waves coming from a transmitter controlled by
Tesla. The receiver device used was a coherer. The coherer received the radio
waves and mechanically converted them to steer the boat’s propellers, thus
allowing Tesla to control the boat from his transmitter. This made front-page news in the newspapers,
as Tesla may have been the first to demonstrate the use of radio waves as a
medium for remote control.
Tesla's Radio Controlled Boat |
Now, we all know
that Guglielmo Marconi as the inventor of radio, but how many really know of Tesla’s
work in radio? Marconi claimed all the first patents for radio. Tesla tried to
prove that he was the creator of radio but it wasn't until 1943, where the US
Supreme Court deemed Marconi’s patents invalid; however, not many know about
Tesla's radio work.
Tesla’s coils, that when tuned to its resonant frequency, was
able to magnify electrical signals. With these coils used in the transmitter, he
found that he could transmit and receive powerful radio signals in 1895.
However, that same year disaster struck and all of his work was destroyed by
fire. By 1897, he filed his radio patent
and the US Patent Office granted it in 1900. Tesla was able to transmit and
receive radio signals 30 miles away at West Point.
The timing could not have been worse as the Italian
experimenter, Guglielmo Marconi, built a wireless device for telegraphy.
Marconi had taken out the first wireless telegraphy patent in England in 1896.
Marconi submitted applications for a US patent in 1900, and
received a grant in 1903. Both Tesla and Marconi filed litigation, and in 1904,
the U.S. Patent Office reversed its previous decisions regarding Tesla and gave
Marconi a patent for the invention of radio. Reasons for this action were never
fully explained, but many feel that Marconi’s strong political and financial
backing was at play here.
Marconi won the Nobel Prize in 1911. This infuriated Tesla who
felt that Marconi was using several of his inventions. In 1915, he sued Marconi
for patent infringement. However, Tesla did not have the financial backing to
litigate a large case against a major corporation such as the Marconi Company. Litigation dragged on for several decades and
shortly after Tesla’s death in 1943, the U.S. Supreme Court finally upheld
Tesla's radio patent.
The Supreme Court had a selfish reason for doing this. The
Marconi Company, which was an English company, was suing the US for use of its
patents in World War I. The Court, to
uphold US interest, avoided action by restoring the priority of Tesla's patent
over Marconi. Hence, Tesla holds the US
patent for radio communications.