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THE REACTIONS OF CERIANTHUS TO LIGHT
1. When Cerianthus membranaceus is illuminated upon one side, the animal turns its anterior portion toward the source of light. The number of degrees through which the animal turns is proportional to the logarithm of the intensity of the light. 2. A light intensity of between 250 m.c. and 15,000 m.c...
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Formato: | Texto |
Lenguaje: | English |
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The Rockefeller University Press
1927
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2140813/ https://www.ncbi.nlm.nih.gov/pubmed/19872212 |
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author | Moore, Mary Mitchell |
author_facet | Moore, Mary Mitchell |
author_sort | Moore, Mary Mitchell |
collection | PubMed |
description | 1. When Cerianthus membranaceus is illuminated upon one side, the animal turns its anterior portion toward the source of light. The number of degrees through which the animal turns is proportional to the logarithm of the intensity of the light. 2. A light intensity of between 250 m.c. and 15,000 m.c. is necessary to cause retraction of the animal. 3. The part of the spectrum which is most effective in causing heliotropic bending of Cerianthus lies between µµ 510 and µµ 570. |
format | Text |
id | pubmed-2140813 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1927 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21408132008-04-23 THE REACTIONS OF CERIANTHUS TO LIGHT Moore, Mary Mitchell J Gen Physiol Article 1. When Cerianthus membranaceus is illuminated upon one side, the animal turns its anterior portion toward the source of light. The number of degrees through which the animal turns is proportional to the logarithm of the intensity of the light. 2. A light intensity of between 250 m.c. and 15,000 m.c. is necessary to cause retraction of the animal. 3. The part of the spectrum which is most effective in causing heliotropic bending of Cerianthus lies between µµ 510 and µµ 570. The Rockefeller University Press 1927-03-07 /pmc/articles/PMC2140813/ /pubmed/19872212 Text en Copyright © Copyright, 1927, 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 Moore, Mary Mitchell THE REACTIONS OF CERIANTHUS TO LIGHT |
title | THE REACTIONS OF CERIANTHUS TO LIGHT |
title_full | THE REACTIONS OF CERIANTHUS TO LIGHT |
title_fullStr | THE REACTIONS OF CERIANTHUS TO LIGHT |
title_full_unstemmed | THE REACTIONS OF CERIANTHUS TO LIGHT |
title_short | THE REACTIONS OF CERIANTHUS TO LIGHT |
title_sort | reactions of cerianthus to light |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2140813/ https://www.ncbi.nlm.nih.gov/pubmed/19872212 |
work_keys_str_mv | AT mooremarymitchell thereactionsofcerianthustolight AT mooremarymitchell reactionsofcerianthustolight |