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A Machine for Changing the Positions of a Pair of Directional Light-Traps to Eliminate Positional Effects
Published online by Cambridge University Press: 31 May 2012
Extract
In work on responses of insects to sound at Belleville, by Mr. G. Wishart, a mechanical device was needed to provide a means of slowly revolving a pair of directional light-traps in a horizontal plane on the circumference of a circle 20 feet in diameter. One of the traps was to be used as an experimental trap and the other as a check against the results of the first. A machine was designed, constructed, and put into operation in July, 1961.
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- Copyright © Entomological Society of Canada 1962
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