|
gptkbp:instance_of
|
gptkb:harbor
|
|
gptkbp:composed_of
|
gptkb:metal
gptkb:glass
|
|
gptkbp:function
|
rectification
|
|
gptkbp:has_applications_in
|
gptkb:Telecommunications
signal processing
computing
audio amplification
|
|
gptkbp:has_historical_significance
|
gptkb:television
sound recording
signal amplification
early electronics
radio development
|
|
gptkbp:has_limitations
|
efficiency
size
heat generation
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Fleming valve
|
|
gptkbp:invention
|
gptkb:John_Ambrose_Fleming
1904
|
|
gptkbp:is_considered
|
a precursor to modern electronics
|
|
gptkbp:is_known_for
|
its role in audio technology
its role in computing
its role in early radio
its role in early television
its role in signal processing
|
|
gptkbp:is_part_of
|
electronic circuits
vacuum tube family
|
|
gptkbp:is_related_to
|
pentode
tetrode
triode
|
|
gptkbp:is_used_in
|
gptkb:Speaker
gptkb:musical_instruments
gptkb:scientific_instruments
gptkb:broadcasting
oscillators
recording equipment
televisions
measurement devices
radios
|
|
gptkbp:known_as
|
gptkb:vacuum_cleaner
|
|
gptkbp:manufacturer
|
various companies
|
|
gptkbp:operates
|
thermionic emission
|
|
gptkbp:replaced_by
|
gptkb:LED
|
|
gptkbp:used_in
|
gptkb:radio_station
|
|
gptkbp:bfsParent
|
gptkb:John_Ambrose_Fleming
|
|
gptkbp:bfsLayer
|
4
|