ERIC Number: EJ538250
Record Type: CIJE
Publication Date: 1994
Reference Count: 0
Measuring the Diameter of a Hair with a Steel Rule.
Macdonald, John; O'Leary, Sean V.
American Journal of Physics, v62 n8 p763-64 Aug 1994
Describes a technique that uses a helium neon laser, a steel rule, a wooden rule, and a piece of paper to measure the diameter of a hair using the diffraction of light. Details on technique, mathematics, and sources of error are provided. (DDR)
Publication Type: Guides - Classroom - Teacher; Journal Articles
Education Level: N/A
Authoring Institution: N/A