Optical Communications Device - Retrometer
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Describes the retrometer, an optical communications device which is based upon the unique properties of a corner reflector, showing how one of the reflector sides is replaced with mylar film which can modulate a light beam emitted by a power source. Points out that this optical communications system is not based on electromagnetic principles and cannot therefore be detected by normal listening procedures.
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 03:08:24