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ERIC Number: EJ1083352
Record Type: Journal
Publication Date: 2006-Nov
Pages: 6
Abstractor: As Provided
ISSN: ISSN-0031-921X
A Simple Photometer to Study Skylight
McIntosh Gordon
Physics Teacher, v44 n8 p540-545 Nov 2006
A simple photometer constructed from an LED and an op amp can be used to measure light in a number of physical situations. A variety of LEDs exist to investigate different wavelength ranges. Combined with an inexpensive transit, the LED photometer can be used to carry out skylight studies and atmospheric optical depth measurements. The activities described in this paper can help students understand why the sky is blue and introduce students to the basics of radiation scattering and planetary atmospheres.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A