The Effects of the Ionosphere on Radio-wave Propagation (1950)
National Audiovisual Center
EducationIndustrial and advertising
Clips are not offered for this film: no licence or public-domain mark is recorded for it.
Low resolution (640×360): this is the archive's own copy.
Parts
About
The Effects of the Ionosphere on Radio-wave Propagation (1950)
Includes a brief history of the electron microscope. Demonstrates the use and the importance of the electron microscope and the techniques in using it.
- Archive
- Internet Archive, in Educational films
- Licence or status
- The Internet Archive states none for this item.
- Credit
- National Audiovisual Center
- Language
- English
- Who can watch
- The archive gives no rating. Invisible Network shows it to Kids profiles and older, judged from its collection and subjects. How films are placed