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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Journal of the Optic...arrow_drop_down
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Journal of the Optical Society of America
Article . 1949 . Peer-reviewed
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Article . 1949 . Peer-reviewed
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The Birefringent Filter

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1949 English Publisher:Optica Publishing GroupJournal:Journal of the Optical Society of America, volume 39, page 229 (issn: 0030-3941, Copyright policy )
Authors: Walter O Roberts; John W. Evans;

doi: 10.1364/josa.39.000229 , 10.1063/1.3066514

The Birefringent Filter

Abstract

The birefringent filter, invented in 1933 by Bernard Lyot, and independently in 1938 by Yngve Öhman, has been widely used in observing solar limb emission line phenomena which are ordinarily invisible because of the background of atmospheric and instrumental scattered light.

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    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    		 240
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    		 Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
240
Top 10%
Top 0.1%
Average
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