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Document Type

Research

Abstract

A high degree of accuracy and sensitivity are obtained by using a combination of a two element vacuum tube and direct current galvenometer, which measures the voltage across the condenser in the resonant circuit instead of the current in the inductance as is the common practice. The small amount of energy necessary to operate this indicator makes possible a very sharp resonance peak. Its sensitivity allows it to be operated far enough from the source of the waves that it does not affect their length. A new method of locating nodes on Lecher's wires makes possible whatever accuracy can be obtained in measurement of a length. The wavemeter is calibrated, with the aid of these wires, for wavelengths between three and one hundred meters.

Publication Date

1926

Journal Title

Proceedings of the Iowa Academy of Science

Volume

33

Issue

1

First Page

240

Last Page

240

Copyright

© Copyright 1926 by the Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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