Description is made of a capillary electrometer designed for physiological studies. The use of this instrument with a thermionic amplifier makes possible the recording of small changes in potential without requiring the construction of an extremely sensitive capillary.
The advantages of the instrument described are the use of a closed acid chamber, an upright position of the capillary, and of even greater importance, the relatively vibration-free meniscus which is obtained by placing the capillary midway between two balancing columns of mercury.
© 1927 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
Clarence E. Bennett
J. Opt. Soc. Am. 11(4) 411-417 (1925)
F. H. Norton
J. Opt. Soc. Am. 14(5) 435-444 (1927)
Elias Klein and Glenn F. Rouse
J. Opt. Soc. Am. 14(3) 263-286 (1927)