Abstract
THE National Research Council of Japan has arranged a programme of observations of the ionosphere during the annular eclipse of May 9 next, the central line of which passes across a small island north-west of Hokkaido. One of the objects of the programme is to obtain further evidence on the speed of particles proceeding from the sun to the earth. The exact times of contacts are to be recorded in connexion with a large-scale programme of geophysical observations.
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Annular Eclipse of the Sun on May 8–9. Nature 161, 196 (1948). https://doi.org/10.1038/161196d0
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DOI: https://doi.org/10.1038/161196d0