ERIC Number: EJ1083292
Record Type: Journal
Publication Date: 2006-Nov
Abstractor: As Provided
Reference Count: N/A
Bartlett, Albert A.
Physics Teacher, v44 n8 p532-533 Nov 2006
Several times a week I walk by a metal chair that is fastened to a flat concrete slab at an outdoor bus stop here in Boulder. One day I noticed on the concrete a nice shadow image of the woven metal seat of the chair (Fig. 1). The seat and back of the chair are formed from 3.8-cm wide strips of metal spaced 3.8 cm apart. The seat is about 39 cm above the concrete. Here's how I think this shadow image was produced.
Descriptors: Measurement, Spatial Ability, Scientific Concepts, Scientific Principles, Teaching Methods, Plane Geometry, Educational Practices
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: email@example.com; Web site: http://scitation.aip.org/tpt
Publication Type: Journal Articles; Guides - Classroom - Teacher; Reports - Descriptive
Education Level: N/A
Audience: Teachers; Students
Authoring Institution: N/A