The principles and application of the electro-magnet, production of magnetic fields by simple experiments; effect of introducing iron cores; retention of magnetism by a steel core; use of electro-magnets in telephone receivers and telephone exchanges; a “self-starter” of a motor vehicle leads on to consideration of AC and DC motors.
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Collection
In ACMI's collection
Credits
Collection metadata
ACMI Identifier
320625
Language
English
Subject categories
Education, Instruction, Teaching & Schools → Science - Study and teaching
Educational & Instructional → Educational films
Mathematics, Science & Technology → Electromagnetism
Mathematics, Science & Technology → Magnetic fields
Mathematics, Science & Technology → Science - Experiments
Mathematics, Science & Technology → Science - Study and teaching
Sound/audio
Sound
Colour
Black and White
Holdings
16mm film; Access Print (Section 1)