A brief discussion of the use of electron tubes in relay circuits controlling physical apparatus. The construction and operation of several relay units were shown

Oelke, W. C.

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The Use of Electron Tubes as Super-Sensitive Relays

University of Northern Iowa

Proceedings of the Iowa Academy of Science Volume 41 Annual Issue Article 38 1934 The Use of Electron Tubes as Super-Sensitive Relays W. C. Oelke Grinnell College Let us know how access to this document benefits you Copyright ©1934 Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/pias Recommended Citation Oelke, W. C. (1934) "The Use of Electron Tubes as Super-Sensitive Relays," Proceedings of the Iowa Academy of Science, 41(1), 141-141. Available at: https://scholarworks.uni.edu/pias/vol41/iss1/38 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academy of Science by an authorized editor of UNI ScholarWorks. For more information, please contact scholarworks@uni.edu. 1934] ABSTRACTS 141 complexity of the adsorbed vapor molecules ; further it is found to decrease with increase in the value of the van der Waals con-stant, b. The heats of adsorption AH, calculated from the adsorption isosteres were found to be: acetone -10690 cal., methyl-ethyl ketone -11225 cal., diethyl ketone -11820 cal., ethyl formate -13140 cal., methyl acetate -11520 cal., ethyl acetate -11920 cal., n-propyl ace-tate -13200 cal., methyl propionate -14030 cal. As is generally found, the heats of adsorption for the ketones, thus calculated, are lower than those which have been determined experimentally. DEPARTMENT OF CHEMISTRY, STATE UNIVERSITY OF IowA, low A CITY, low A. SOME OBSERVATIONS OF THE BOILING POINTS OF TERNARY LIQUID MIXTURES .}OHN DUNHAM AND w. c. OELKE An exposition of an apparatus for the determination of the boil-ing points of liquid mixtures under constant pressure, and the results of preliminary investigations upon ternary mixtures of some common organic liquids. GRINNELL COLLEGE, GRINNELL, low A. THE USE OF ELECTRON TUBES AS SUPER-SENSITIVE RELAYS W. C. OELKE A brief discussion of the use of electron tubes in relay circuits controlling physical apparatus. The construction and operation of several relay units were shown. GRINNELL COLLEGE, GRINNELL, low A. THE DIPOLE MOMENTS OF CERTAIN ORGANIC COMPOUNDS J. N. PEARCE AND L. F. BERHENKE The dielectric constants and densities of dilute solutions of p-brombenaldehyde, p-tolualdehyde, p-hydroxybenzaldehyde and 1Oelke: The Use of Electron Tubes as Super-Sensitive RelaysPublished by UNI ScholarWorks, 1934

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The Use of Electron Tubes as Super-Sensitive Relays

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