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Document Type

Research

Abstract

Experiments were conducted to record cathode rays of low voltage on a film. This was carried out by means of a specially constructed vacuum tube, the film passing over a slit in the anode which formed part of the outside of the tube. It was hoped that this would provide a means of sound recording when the tube was properly modulated. Problems concerning the making of the slit, the maintenance of a suitable vacuum, a filament which would give a good emission at working pressure, and the proper designs for the tube elements were considered.

Publication Date

1933

Journal Title

Proceedings of the Iowa Academy of Science

Volume

40

Issue

1

First Page

151

Last Page

151

Copyright

©1933 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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