Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
vacuum tube
|
| gptkbp:category |
gptkb:television
|
| https://www.w3.org/2000/01/rdf-schema#label |
orthicon
|
| gptkbp:inventedBy |
gptkb:RCA
|
| gptkbp:operationalPeriod |
1940s
1950s |
| gptkbp:principle |
secondary emission
photoemission |
| gptkbp:relatedTo |
gptkb:image_orthicon
iconoscope vidicon |
| gptkbp:replacedBy |
gptkb:image_orthicon
vidicon |
| gptkbp:technology |
electronic
|
| gptkbp:usedFor |
gptkb:television
|
| gptkbp:usedIn |
black-and-white television cameras
|
| gptkbp:bfsParent |
gptkb:vacuum_tube
|
| gptkbp:bfsLayer |
5
|