CHAPTER ON LONG WAVES FROM BOOK IONOSPHERIC PROPAGATION OF RADIO WAVES
Abstract
A physical theory of propagation of long waves was developed which provides methods of computation and make it possible to compare theory with experiment. Also, new experimental results were obtained from 2 sources: direct experiments with radio waves, and indirectly by using atmospherics. Therefore, at present, it is not necessary to be limited to radio waves created by radio arrangements only, but it becomes possible to broaden the investigation down to electromagnetic waves at the lowest observed frequency (i.e., 10-12 kc). Some results of theoretical computation are presented including super-low frequencies down to some tens of cycles per second. The results of experimental investigations of atmospherics, particularly the whistling atmospherics, are briefly analyzed. It should be noted that the question of electromagnic waves, in the range 3-5 kc and lower, remains uninvestigated with adequate precision, either theoretically or experimentally up to the present time.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 05, 1961
- Accession Number
- AD0268146
Entities
People
- Ya.l. Al'pert
Organizations
- National Institute of Standards and Technology