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XXXII.—Observations of the Earth-air Electric Current and the Atmospheric Potential Gradient at Edinburgh

Published online by Cambridge University Press:  15 September 2014

G. A. Carse  and
D. MacOwan
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Extract

The portable gold-leaf electrometer designed by C. T. R. Wilson gives a means of measuring the charge upon and current through a conductor exposed to the earth's field and maintained at zero potential. Further, Wilson has shown (1) that the dissipation factor (the ratio of current per minute to the corresponding charge) is approximately the same for a surface of turf and the metal test-plate; and (2) how to deduce the corresponding charge and current per square centimetre on the neighbouring ground-level. Wilson's measurements were made chiefly in a country atmosphere (near Peebles), and we have made observations with a similar instrument in town air, in and near Edinburgh, to find out whether the dissipation factor is notably affected by the purity of the atmosphere as regards smoke, etc.

Type
Proceedings
Information
Proceedings of the Royal Society of Edinburgh , Volume 30 , 1910 , pp. 460 - 465
Copyright
Copyright © Royal Society of Edinburgh 1910

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References

page 460 note * Proc. Camb. Phil. Soc., xiii., 4, 184, 1905; ibid., xiii., 6, 363, 1906.

page 460 note † Proc. Roy. Soc., A, lxxx., 537, 1908.

page 465 note * Australian Assoc. for the Adv. of Science Address, sect. A, p. 40, 1909.