Inventors
Lee
De Forest - Space Telegraphy
By
Mary
Bellis
The prolific American inventor Lee
De Forest (1873-1961) is one of several pioneers of radio development.
De Forest experimented with receiving long-distance radio signals and in
1907 patented an electronic device named the audion. Until this time, the
radion was considered little more than "wireless telagraphy," since it
sent Morse code (dots and dashes) instead of conveying actual sound. De
Forest's new three-electrode (triode) vacuum tube boosted radio waves as
they were received and made possible what was then called "wireless telephony,"
which allowed the human voice, music, or any broadcast signal to be heard
loud and clear.
An example of De Forest's schematic
diagrams and notes scribbled hurriedly on hotel stationary around 1915.
Lee
De Forest - Space Telegraphy
Lee De Forest invented space telegraphy
- National Inventors Hall of Fame.
Lee
DeForest
Lee DeForest invented the triode
amplifier and space telegraphy - Invention Dimension.
Lee
De Forest
The live of Lee De Forest, American
inventor of the Audion
vacuum tube, which made possible live radio broadcasting and became
the key component of all radio, telephone, radar, television, and computer
systems before the invention of the transistor in 1947.
The
De Forest Reflex Radiophones
Dave Gonshor's description of the
De Forest reflex Radiophone models provides another glimpse of Lee de Forest's
bumpy ride through radio history.
Related Innovations
Radio
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