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ERIC Number: EJ1059684
Record Type: Journal
Publication Date: 2015
Pages: 2
Abstractor: As Provided
Reference Count: 10
ISSN: ISSN-0031-921X
Are You Ready, Kids? It's Spongebob Triclops!
Ribeiro, Jair LĂșcio Prados
Physics Teacher, v53 n5 p298-299 May 2015
If an object is conveniently located in front of two plane mirrors placed at an angle, an observer can see a superposition of images that results in a face with three eyes, called in this text a "triclops." The conditions of occurrence of such an image may seem trivial, but this is incorrect: rather, the correct interpretation of this image requires a fine geometric look. In this article, we developed a simple geometric model to determine the conditions under which the triclops can be seen, involving only concepts of plane geometry and trigonometry.
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