Societies and Academies


    LONDON. Royal Society, January 13.—D. P. Phillips: Re-combination of ions at different temperatures. The ionisation was produced in a layer of air of uniform thickness by means of a single discharge through a Röntgen bulb. The layer of air ionised was situated midway between two parallel electrodes, and was separated from each by a layer of un-ionised air. The quantity received by each electrode depends upon the field established between them, and from the variation of the quantity with the field the coefficient of re-combination can be calculated. By placing the pair of electrodes in a double-walled jacket the temperature was varied, and the coefficient of re-combination found at different temperatures. The values which were found are:—

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    Societies and Academies . Nature 82, 507–510 (1910).

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