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Document Type

Research

Abstract

In the first of these the acceleration due to gravity is measured by timing by means of an electrically driven tuning fork the descent of a small metal ball. The start and finish of the fall are recorded electrically on a rotating drum on which the fork is also making a trace. In the second experiment the average velocity of air molecules is measured by finding the volume per second of the gas emerging from a region of higher pressure (usually atmospheric) into one of low pressure, through a small orifice of measured diameter.

Publication Date

1937

Journal Title

Proceedings of the Iowa Academy of Science

Volume

44

Issue

1

First Page

152

Last Page

152

Copyright

© Copyright 1937 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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