•  
  •  
 

Document Type

Research

Abstract

As an initial step toward determining the amount of ultra violet light in skyshine and in sunshine it was deemed desirable to determine the ratio of skyshine to sunshine in the visible spectrum. Accordingly readings were taken on a horizontal plane on top of a tall building, once with the test plate of a Macbeth illuminometer exposed to the entire dome of the heavens including the sun and again when the sun was blocked out by an opaque disk. Observations were made every hour on perfectly clear days only.

Publication Date

1930

Journal Title

Proceedings of the Iowa Academy of Science

Volume

37

Issue

1

First Page

303

Last Page

305

Copyright

©1930 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.