Sending radio messages
- Date
1943
- Main contributors
Erpi Classroom Films, inc.; Wilbur L. Beauchamp
- Summary
-
Uses animation to demonstrate the basic principles of radio transmission. Explains the operation of microphone, transformer, and modulator. Distinguishes among direct, alternating, and voice currents; and elaborates upon the physical laws relating to carrier waves and amplification. Uses natural photography to show the operation of units in a modern transmission station. Discusses the all-important place of radio in modern living.
- Publishers
Erpi Classroom Films, inc.; Indiana University. Audio-Visual Center
- Genre
Educational
- Subjects
Electromagnetic waves; Radio--Transmitters and transmission; Telecommunication Name Authority
- Collection
Encyclopaedia Britannica Educational Corporation
- Unit
IUL Moving Image Archive
- Language
English
- Rights Statement
- No Copyright - United States
- Other Identifiers
Other: GR00415012; MDPI Barcode: 40000003357664
Access Restrictions
This item is accessible by: the public.