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A Controller for a Light Source

Published online by Cambridge University Press:  10 July 2009

S. W. Bailey  and
J. B. McCabe
S. W. Bailey
Affiliation:
Division of Entomology, Commonwealth Scientific and Industrial Research Organization, Canberra, Australia.
J. B. McCabe
Affiliation:
Division of Entomology, Commonwealth Scientific and Industrial Research Organization, Canberra, Australia.
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Extract

An instrument is described that will brighten and dim a light source and control its “on” and “off” timing.

The periods of brightening and dimming and the period of full illumination are both adjustable.

The instrument is being used successfully for studying the effects of changing light intensity and photoperiod on the activity and development of insects.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 48 , Issue 3 , September 1957 , pp. 463 - 465
Copyright
Copyright © Cambridge University Press 1957

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