Telescope
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Complete catalog record
Shows different types of telescopes and their use and care. Two students construct a basic refractor telescope, and learn the concepts of focal length, inversion, terrestrial and celestial viewings as well as the difference between refractors and reflectors.
Sources
- 16mm Filmography (legacy record) — title, year, catalog record
Original permalink · Record added 2024-09-08 09:19:25