Accession Number:

AD0270856

Title:

EXTREMELY LOW FREQUENCY RECEPTION AT KINGSTON, R. I.

Descriptive Note:

Corporate Author:

RHODE ISLAND UNIV KINGSTON

Personal Author(s):

• POLK,C.
• FITCHEN,F.

Report Date:

1961-11-15

Pagination or Media Count:

1.0

Abstract:

Magnetic fields of natural origin in the 5 to 20 c.p.s. frequency range were recorded in Kingston, R. I. The experimental equipment is described briefly, and results are presented. Variations with time of the first resonant frequency of the earth-ionosphere cavity are indicated, and effects of solar activity are discussed. An analysis of the envelope of recorded wave trains shows only fair agreement with existing theory. Author

Descriptors:

• *ELECTROMAGNETIC RADIATION
• *MAGNETIC FIELDS
• AUDIO FREQUENCY
• CAVITY RESONATORS
• IONOSPHERE
• NOISE
• OSCILLATION
• RECORDING SYSTEMS
• RESONANCE
• THEORY

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE