ORIENTATION BY OPPOSED BEAMS OF LIGHT

Computations of the effective angular inclination (H) of the photoreceptive surfaces of the two sides, based upon measurements of orientation angles under the action of beams of light directly opposed or crossing at right angles, show that with larvae of Calliphora and of Lucillia H declines as the...

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Detalles Bibliográficos
Autores principales: Crozier, W. J., Kropp, Benjamin
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1935
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2141383/
https://www.ncbi.nlm.nih.gov/pubmed/19872883
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author Crozier, W. J.
Kropp, Benjamin
author_facet Crozier, W. J.
Kropp, Benjamin
author_sort Crozier, W. J.
collection PubMed
description Computations of the effective angular inclination (H) of the photoreceptive surfaces of the two sides, based upon measurements of orientation angles under the action of beams of light directly opposed or crossing at right angles, show that with larvae of Calliphora and of Lucillia H declines as the total illumination decreases (i.e., as the angle of orientation away from the more intense light increases). H is greater with the two lights opposed at 180°; this may be due to the difference in refraction. For the more sharply pointed larvae of Lucillia, H is less than half as great as in Calliphora.
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spelling pubmed-21413832008-04-23 ORIENTATION BY OPPOSED BEAMS OF LIGHT Crozier, W. J. Kropp, Benjamin J Gen Physiol Article Computations of the effective angular inclination (H) of the photoreceptive surfaces of the two sides, based upon measurements of orientation angles under the action of beams of light directly opposed or crossing at right angles, show that with larvae of Calliphora and of Lucillia H declines as the total illumination decreases (i.e., as the angle of orientation away from the more intense light increases). H is greater with the two lights opposed at 180°; this may be due to the difference in refraction. For the more sharply pointed larvae of Lucillia, H is less than half as great as in Calliphora. The Rockefeller University Press 1935-05-20 /pmc/articles/PMC2141383/ /pubmed/19872883 Text en Copyright © Copyright, 1935, by The Rockefeller Institute for Medical Research This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Article
Crozier, W. J.
Kropp, Benjamin
ORIENTATION BY OPPOSED BEAMS OF LIGHT
title ORIENTATION BY OPPOSED BEAMS OF LIGHT
title_full ORIENTATION BY OPPOSED BEAMS OF LIGHT
title_fullStr ORIENTATION BY OPPOSED BEAMS OF LIGHT
title_full_unstemmed ORIENTATION BY OPPOSED BEAMS OF LIGHT
title_short ORIENTATION BY OPPOSED BEAMS OF LIGHT
title_sort orientation by opposed beams of light
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2141383/
https://www.ncbi.nlm.nih.gov/pubmed/19872883
work_keys_str_mv AT crozierwj orientationbyopposedbeamsoflight
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