Photographic Intensity Measurements of Lines of the Paschen Series of Hydrogen in the Infra-Red Solar Spectrum

Details Photographic Intensity Measurements of Lines of the Paschen Series of Hydrogen in the Infra-Red Solar Spectrum Photographic Intensity Measurements of Lines of the Paschen Series of Hydrogen in the Infra-Red Solar Spectrum

Oct 1934

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1934natur.134..533r&link_type=abstract

Nature, Volume 134, Issue 3388, pp. 533-534 (1934).

Physics

Scientific paper

THE photographic photometric methods used in the Utrecht Physical Laboratory were applied to some important lines of the infra-red solar spectrum. For the nearer infra-red at about 10000 A., the Agfa plates ``Rapid 960'' were used, for the farther region at about 11000 A. the new Agfa plates with a maximum of sensitivity at 10600 A. The dispersion of the first order spectrum was 4 A./mm.

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