Principles of magnetism
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Polarity, lines of force. Reluctance and permeability. Magnetic induction uses of magnets.
Complete catalog record
Sources
- 16mm Filmography (legacy record) — title, catalog record
- Index of Training Films 1946 — title, creator, length, format, sound, description, catalog record
Original permalink · Record added 2026-01-23 03:56:45