Properties (59)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
electronic component
|
| gptkbp:composedOf |
metal filings
|
| gptkbp:developedBy |
19th century
|
| gptkbp:firstHeld |
wireless telegraphy
|
| gptkbp:function |
detecting radio signals
|
| gptkbp:hasRelatedPatent |
amateur radio
|
| https://www.w3.org/2000/01/rdf-schema#label |
coherer
|
| gptkbp:inventor |
gptkb:Edgar_F._Johnson
|
| gptkbp:isA |
passive device
|
| gptkbp:isAssociatedWith |
Guglielmo Marconi
wireless communication the history of wireless technology |
| gptkbp:isChallengedBy |
modern semiconductor devices
|
| gptkbp:isCharacterizedBy |
its ability to change resistance
|
| gptkbp:isConnectedTo |
antenna system
early radio networks |
| gptkbp:isConsidered |
a precursor to modern detectors
a primitive detector an early form of radio receiver an important milestone in radio history |
| gptkbp:isDedicatedTo |
metallic contact
|
| gptkbp:isFoundIn |
early radio equipment
|
| gptkbp:isInfluencedBy |
signal strength
the field of telecommunications |
| gptkbp:isKnownFor |
its simplicity
|
| gptkbp:isLinkedTo |
the advancement of wireless communication.
the development of telegraphy |
| gptkbp:isNotableFor |
its role in early radio experiments
its role in the invention of radio |
| gptkbp:isNotedFor |
its historical significance
its simplicity and effectiveness |
| gptkbp:isPartOf |
the evolution of communication technology
historical development of radio technology historical radio technology radio receiver circuit the legacy of radio inventions |
| gptkbp:isRecognizedFor |
a key invention in radio technology
|
| gptkbp:isStudiedIn |
radio frequency signals
|
| gptkbp:isTrainedIn |
laboratory experiments
early radio pioneers |
| gptkbp:isUsedBy |
detect electromagnetic radiation
|
| gptkbp:isUsedFor |
amplifiers
signal detection early radio receivers |
| gptkbp:isUsedIn |
early radio transmitters
early wireless telegraphy systems historical radio experiments |
| gptkbp:isUtilizedIn |
wireless communication systems
|
| gptkbp:isVisitedBy |
environmental noise
|
| gptkbp:madeOf |
conductive materials
|
| gptkbp:operatesIn |
electromagnetic waves
|
| gptkbp:relatedTo |
Marconi's_experiments
|
| gptkbp:replacedBy |
crystal detector
|
| gptkbp:requires |
external power source
resetting after use |
| gptkbp:sensors |
high
|
| gptkbp:type |
detector
|
| gptkbp:usedIn |
radio technology
|
| gptkbp:wasPartOf |
early 1900s
|