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gptkbp:instance_of
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gptkb:physicist
gptkb:patent
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gptkbp:bfsLayer
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5
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gptkbp:bfsParent
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gptkb:Ray_Dolby
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gptkbp:alma_mater
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gptkb:University
gptkb:University_of_Pennsylvania
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gptkbp:associated_with
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gptkb:American_Institute_of_Electrical_Engineers
gptkb:Institute_of_Radio_Engineers
gptkb:National_Academy_of_Engineering
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gptkbp:awards
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gptkb:political_movement
gptkb:IEEE_Medal_of_Honor
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gptkbp:born
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August 26, 1873
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gptkbp:contribution
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pioneering work in radio transmission
creation of the triode vacuum tube
development of sound-on-film technology
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gptkbp:died
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June 30, 1961
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gptkbp:field
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gptkb:radio_station
gptkb:Telecommunications_company
electrical engineering
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https://www.w3.org/2000/01/rdf-schema#label
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Lee De Forest
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gptkbp:influenced_by
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gptkb:Nikola_Tesla
gptkb:Thomas_Edison
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gptkbp:invention
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gptkb:musician
gptkb:aircraft
gptkb:phonofilm
gptkb:microprocessor
gptkb:television_series
gptkb:film_production_company
gptkb:Telecommunications_company
amplitude modulation
wireless audio transmission
cathode ray tube
audio signal processing
signal modulation
sound recording technology
frequency modulation
wireless telegraphy
photoelectric cell
television broadcast system
television receiver
television transmission system
telegraphy system
sound reproduction system
electronic oscillator
radio frequency amplifier
electronic amplifier
high-frequency oscillator
audion tube
electronic sound system
photoelectric effect application
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gptkbp:known_for
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gptkb:aircraft
gptkb:vacuum_cleaner
audion
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gptkbp:nationality
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gptkb:Native_American_tribe
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gptkbp:residence
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gptkb:Borough
gptkb:Los_Angeles
gptkb:San_Francisco
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gptkbp:spouse
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gptkb:Mabel_De_Forest
Helen De Forest
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