RADIO WAVES
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Series: Planet Earth Series
Duration: 27 min
Year Published: 1961
Creator: Produced by National Academy of Sciences
Format: 16mm
Color: B&W
Sound: Sound
Description: Discusses the nature and history of radio waves, beginning with Hertz's discoveries in the 19th century. Explains the influence of the ionosphere on radio waves. Delineates the relationship between radio waves and the ionosphere, the earth's magnetic force and solar activity
Complete Record: Series: Planet earth series Source: McGraw Interest level: jh-sh-c-ad Guide: Guide Price: $90, rent $10 Format: sd b&w
Metadata Source:Educational film guide. Supplements (1959-62)
No holdings listed.
Related films:
- SCIENCE IN SPACE (1961) · Produced by National Academy of Sciences
- SECRETS OF THE ICE (1961) · Produced by National Academy of Sciences
- THE SHAPE OF THE EARTH (1961) · Produced by National Academy of Sciences
- RESEARCH BY ROCKETS (1961) · Produced by National Academy of Sciences
- THE NEAREST STAR (1961) · National Academy of Sciences
- THE INCONSTANT AIR (1961) · National Academy of Sciences
- MAGNETIC FORCE (1961) · National Academy of Sciences
- THE FORCE OF GRAVITY (1961) · National Academy of Sciences
Record added: 2026-07-06 16:23:58