Abstract
IN a recent communication, P. Herrinck1 has given a table of predicted sunspot numbers for the current solar cycle (No. 19), based upon the striking coincidence of values between the two periods 1749–85 and 1918–54. A good fit was obtained by multiplying figures observed 169 years before by a factor of proportion. This means, essentially, that cycles 16, 17, and 18 have been made to correspond with the cycles 169 years earlier, namely, cycles 1, 2, and 3, respectively.
Similar content being viewed by others
Article PDF
References
Herrinck, P., Nature, 184, 51 (1959).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
CHADWICK, W. Prediction of Sunspot Numbers for Cycle 20. Nature 184, 1787 (1959). https://doi.org/10.1038/1841787a0
Issue Date:
DOI: https://doi.org/10.1038/1841787a0
This article is cited by
-
An Estimate of the Peak Sunspot Number in 1968
Nature (1960)
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.