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ERIC Number: EJ859366
Record Type: Journal
Publication Date: 2009-Oct
Pages: 3
Abstractor: As Provided
Reference Count: 1
ISSN: ISSN-0031-921X
Why Does the Goldfish Disappear in the Fishbowl?
Zhu, Yuhua; Shi, Fengliang
Physics Teacher, v47 n7 p424-426 Oct 2009
You may have observed that a small goldfish swimming in a spherical fishbowl can suddenly disappear. Why does this happen? The effect is due to total internal reflection. In this paper we find the locations of the fish and the observer's eye for which the fish cannot be seen.
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: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A