Abstract
NATURAL electromagnetic signals of very low frequency have been studied by several investigators during the past few years. In 1948 Willis1 reported a series of measurements of ‘magnetic noise’ in the frequency-range 5–800 cycles/sec. but did not discuss the problem of the physical origin of the observed signals. That some of the signals reported by Willis are due to lightning is strongly indicated by observations of other investigators2. Aarons and Henissart3, working in the frequency-range 1–20 cycles/sec., have reported correlations between low-frequency magnetic fluctuations and geomagnetic disturbance and solar phenomena. Therefore it appears that in the frequency-range 1–100 cycles/sec, there is a transition in the dominant physical cause of natural electromagnetic signals.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Willis, H., Nature, 161, 887 (1948).
Watson-Watt, R. A., Herd, J. F., and Lutkin, F. E., Proc. Roy. Soc., A, 162, 267 (1937). Hepburn, F., and Pierce, E. T., Nature, 171, 837 (1953). Chapman, F. W., and Matthews, W. D., Nature, 172, 495 (1953).
Aarons, J., and Henissart, M., Nature, 172, 682 (1953).
Torreson, O. W., Gish, O. H., Parkinson, W. C., and Wait, G. R., Scientific Results of Cruise VII of the Carnegie, Carnegie Institution of Washington, Pub. 568 (1946).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
HOLZER, R., DEAL, O. Low Audio-frequency Electromagnetic Signals of Natural Origin. Nature 177, 536–537 (1956). https://doi.org/10.1038/177536a0
Issue Date:
DOI: https://doi.org/10.1038/177536a0
This article is cited by
-
The contribution of sprites to the global atmospheric electric circuit
Earth, Planets and Space (2006)
-
The present status of atmospheric electric research
Archiv für Meteorologie, Geophysik und Bioklimatologie Serie A (1967)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.