Abstract
WITH reference to the three recent large sunspots reported in NATURE of December 5, p. 965, it is of interest to note that on December 3 a bright hydrogen eruption was observed at the Royal Observatory, Greenwich, to take place near one of them which was at the time 55° west of the sun's central meridian. The region in question was under observation with the spectrohelioscope (using the hydrogen line of the solar spectrum, H) at 11h 46m U.T., when a minor bright eruption was seen to be in progress. At 11h 57m a recrudescence of activity began, and by 12h 03m the bright hydrogen eruption had become as bright as the continuous spectrum 4A. from the centre of the H line. At 12h 18m, cloud unfortunately intervened, but from previous experience it is known that the average duration of the major bright eruptions is 30–45 minutes.
Similar content being viewed by others
Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
NEWTON, H. Radio Fadings and Bright Solar Eruptions. Nature 138, 1017 (1936). https://doi.org/10.1038/1381017b0
Published:
Issue Date:
DOI: https://doi.org/10.1038/1381017b0
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.