A Portable Vacuum-Tube Millivoltmeter
Authors: Goodwin, C. W.; Nims, L. F.; Parr, Thaddeus
Source: Journal of Forestry, Volume 41, Number 6, 1 June 1943 , pp. 414-416(3)
Publisher: Society of American Foresters
Abstract:This article describes in detail a portable vacuum-tube millivoltmeter which has proved practicable for field use in measuring voltage gradients in trees.
Document Type: Journal Article
Affiliations: Assistant Entomologist, Bureau of Entomology and Plant Quarantine, U. S. Department of Agriculture, New Haven, Conn.
Publication date: June 1, 1943
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