The Use of Photoelectric Cells for Sampling Light in Forest Stands

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Abstract:

Despite the fact that photoelectric cells have been utilized to a considerable extent in measuring light intensity in forest stands, the author believes that the use of a flat sensitive surface has resulted in a high degree of error due to variations in the angle of inclination. As a remedy for this a method is set forth embodying a sphere enclosing the cell as the sensitive unit. Results secured with this device are compared both as applied to hand sampling and to continuous recording.

Document Type: Journal Article

Affiliations: Universtiy of California

Publication date: January 1, 1939

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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