Sunspot velocity fields
Research in sunspot velocity fields was initiated by Evershed in 1909. He observed that, in general, Fraunhofer lines crossing a sunspot appeared to be equally displaced in wavelength in opposite directions on either aide of the spot, and subsequent measures of sunspot spectra enabled him to deduce...
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University of Oxford
1962
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| Online Access: | http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.734629 |