Sight Switch
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✎ Suggest a correctionDescribes the use of a reflected infra-red ray sensitive sight switch as a device to control certain operations by movement of the human eye.
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Sources
- A-V Online (National Information Center for Educational Media). CD-ROM database of educational and documentary media, compiled and maintained by the National Information Center for Educational Media (NICEM). — title, year, creator, length, format, sound, description
- 16mm Filmography (legacy record) — catalog record
Original permalink · Record added 2023-02-27 04:05:52 · Suggest a correction