| Modulations in the light of the firefly. | |
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MedLine Citation:
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PMID: 23385807 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Continuous light could be produced from the firefly by making it inhale vapours of ethyl acetate. Here we perform such a control experiment on the Indian species of the firefly Luciola praeusta Kiesenwetter 1874 (Coleoptera : Lampyridae : Luciolinae), and analyse the light in the microsecond time scale. The amplitude of the continuous train of triangular pulses is apparently altered in accordance with the instantaneous values of a hypothetical signal, which exhibits pulse amplitude modulation (PAM). In addition to sampling in amplitude, this scheme apparently provides sampling in time, representing pulse width modulation (PWM). A Fourier transform spectrum of this waveform shows the 'carrier' frequency and the accompanying 'side bands'. |
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Authors:
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Anurup Gohain Barua |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of biosciences Volume: 38 ISSN: 0973-7138 ISO Abbreviation: J. Biosci. Publication Date: 2013 Mar |
Date Detail:
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Created Date: 2013-02-06 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8100809 Medline TA: J Biosci Country: India |
Other Details:
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Languages: eng Pagination: 9-12 Citation Subset: IM |
Affiliation:
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Department of Physics, Gauhati University, Guwahati 781 014, India, agohainbarua@yahoo.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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