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ERIC Number: EJ977818
Record Type: Journal
Publication Date: 2012-Jan
Pages: 3
Abstractor: As Provided
Reference Count: 2
ISBN: N/A
ISSN: ISSN-0031-9120
Simple Photometry
Mills, Allan
Physics Education, v47 n1 p61-63 Jan 2012
Details are given of a visual photometer based on Joly's paraffin block apparatus of 1888. It is readily constructed from a couple of ordinary candles and a piece of aluminum foil, but enables two luminous sources to be compared to plus or minus 15-20%; this is much better than the eye alone can do. (Contains 1 figure.)
Descriptors: Science Instruction, Science Laboratories, Laboratory Equipment, Lighting, Science Experiments
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://journals.iop.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: N/A