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Article Title

Photomograph

Document Type

Research

Abstract

A photometer is arranged in such manner that the screen and the lamp tested are stationary, the standard lamp being adjusted in distance to effect a balance. If the standard is moved by means of a band running over a wheel conveniently near the screen this wheel will revolve through an angle proportional to the distance the standard is moved.

Publication Date

1928

Journal Title

Proceedings of the Iowa Academy of Science

Volume

35

Issue

1

First Page

254

Last Page

255

Copyright

©1928 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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