No subject
Sat Jan 12 11:42:45 CST 2008
Berlin=92s Technical University to do graduate work. During the course of h=
is
studies in Germany, he read the book =93Alternating Current Phenomena=94 by=
Dr.
Charles P. Steinmetz. He was so impressed by Dr. Steinmetz=92s book, that he
set a goal of working with Dr. Steinmetz and his employer, General Electric.
=20
Reaching the goal meant that a move to the Unites States was necessary. He
took an interim job with C&C Electric Company in New Jersey before hiring on
with Steinmetz at General Electric=92s Schenectady, NY facility.
=20
The first major task assigned to him was the development of a variation of
the =93spark transmitter,=94 a machine used for transmitting the short burs=
ts of
tone that became Morse code. This new transmitter would have a continuous
wave that was capable of transmitting the human voice. Working with
Fessenden, the 100 kilohertz alternator was completed in two years. In 1906,
connected to Fessenden=92s transmitter, this alternator carried the human
voice over the air waves for the first time.
=20
Who was this pioneer of the communication industry?
=20
|
|
|
V
=20
=20
=20
=20
=20
=20
=20
=20
=20=20
=20
=20
=20
=20
Ernst Alexanderson continued his work at General Electric after the
invention of the Alexanderson Alternator, but he also began working for the
company that was formed to capitalize on this and other communication
advancements, the Radio Corporation of America (RCA).
=20
After serving as chief engineer of RCA for five years, Alexanderson returned
full time to General Electric in 1924, where he worked on the transmission
of pictures. He was able to complete the first transatlantic fax in 1926,
transmitting a picture to Europe in just under 2 minutes. Of perhaps greater
commercial importance, he had already begun work on television broadcasting.
In fact, in 1927 his home was the site of TV=92s first home reception.
=20
Alexanderson=92s passion for the communications industry continued to spark
further advancements including a system for transmission of color television
in 1930; an audio recording system that used film in 1927; a telephone
system for connecting trains; a telegraphy system for the military; and a
radar altimeter, which predated the radar system developed by the British 20
years later. During World War II he designed the amplidyne, an
electrodynamic amplifier. In 1945 he invented a portable sound recorder, and
in 1955 he patented a color television receiver.
=20
This prolific inventor continued work well into his later years. He died in
1973 at the age of 97. He was posthumously elected to the Inventor=92s Hall=
of
Fame in 1983.
=20
=20=20
=20
=20=20
=20
=20
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<p class=3DMsoNormal>Famous Engineers > How We Went From Tapping Code to=
Radio
Shows<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>It’s Christmas Eve, 1906. A Morse code operator =
on a
United Fruit ship in the Atlantic Ocean moves closer to his receiver. Inste=
ad
of the usual, primitive taps of Morse code, he hears a man speaking over the
receiver, followed by music. And so began the world’s first long dist=
ance
radio transmission.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>The man’s voice heard up and down the Eastern se=
aboard
that night was Professor Reginald Fessenden. But, that historic night was m=
ade
possible by an alternator developed by a young engineer who had recently
emigrated to the U.S. from Sweden.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>Born in Upsala, Sweden in 1878, and graduated as an
electrical engineer from Stockholm’s Royal Institute of Technology, t=
his
engineer’s career was shaped by the reading of one book that made a
lasting impression.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>From Stockholm, armed with his degree in electrical
engineering, he moved to Berlin’s Technical University to do graduate
work. During the course of his studies in Germany, he read the book
“Alternating Current Phenomena” by Dr. Charles P. Steinmetz. He=
was
so impressed by Dr. Steinmetz’s book, that he set a goal of working w=
ith
Dr. Steinmetz and his employer, General Electric. <o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>Reaching the goal meant that a move to the Unites Stat=
es was
necessary. He took an interim job with C&C Electric Company in New Jers=
ey
before hiring on with Steinmetz at General Electric’s Schenectady, NY
facility.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>The first major task assigned to him was the developme=
nt of
a variation of the “spark transmitter,” a machine used for
transmitting the short bursts of tone that became Morse code. This new
transmitter would have a continuous wave that was capable of transmitting t=
he
human voice. Working with Fessenden, the 100 kilohertz alternator was compl=
eted
in two years. In 1906, connected to Fessenden’s transmitter, this
alternator carried the human voice over the air waves for the first time.<o=
:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>Who was this pioneer of the communication industry?<o:=
p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>|<o:p></o:p></p>
<p class=3DMsoNormal>|<o:p></o:p></p>
<p class=3DMsoNormal>|<o:p></o:p></p>
<p class=3DMsoNormal>V<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal> <o:p></o:p></p>
<p class=3DMsoNormal> <o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal> <o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal> <o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal> <o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>Ernst Alexanderson continued his work at General Elect=
ric
after the invention of the Alexanderson Alternator, but he also began worki=
ng
for the company that was formed to capitalize on this and other communicati=
on
advancements, the Radio Corporation of America (RCA).<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>After serving as chief engineer of RCA for five years,
Alexanderson returned full time to General Electric in 1924, where he worke=
d on
the transmission of pictures. He was able to complete the first transatlant=
ic
fax in 1926, transmitting a picture to Europe in just under 2 minutes. Of p=
erhaps
greater commercial importance, he had already begun work on television
broadcasting. In fact, in 1927 his home was the site of TV’s first ho=
me
reception.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>Alexanderson’s passion for the communications in=
dustry
continued to spark further advancements including a system for transmission=
of
color television in 1930; an audio recording system that used film in 1927;=
a
telephone system for connecting trains; a telegraphy system for the militar=
y;
and a radar altimeter, which predated the radar system developed by the Bri=
tish
20 years later. During World War II he designed the amplidyne, an
electrodynamic amplifier. In 1945 he invented a portable sound recorder, an=
d in
1955 he patented a color television receiver.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal>This prolific inventor continued work well into his la=
ter
years. He died in 1973 at the age of 97. He was posthumously elected to the
Inventor’s Hall of Fame in 1983.<o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal> <o:p></o:p></p>
<p class=3DMsoNormal> <o:p></o:p></p>
<p class=3DMsoNormal> <o:p></o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
<p class=3DMsoNormal><o:p> </o:p></p>
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