Letter | Published:

Origin of Sunspots

Nature volume 166, pages 3132 (01 July 1950) | Download Citation

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Abstract

ALTHOUGH astronomers have commonly believed that sunspots are deep-seated vortices, the chief characteristics of a spot (an intense magnetic field and a cool umbra) have never been successfully explained.

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Affiliations

  1. Harvard College Observatory. Feb. 14.

    • DONALD H. MENZEL

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DOI

https://doi.org/10.1038/166031b0

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