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ERIC Number: EJ1211115
Record Type: Journal
Publication Date: 2019-Apr
Pages: 1
Abstractor: As Provided
ISBN: N/A
ISSN: ISSN-0031-921X
EISSN: N/A
Available Date: N/A
An Improved Technique for Visualizing Microwave Wavelengths in Microwave Ovens
Lincoln, James
Physics Teacher, v57 n4 p271 Apr 2019
There have been a few methods described in this journal and elsewhere for measuring the wavelength of the standing electromagnetic waves in a microwave oven. Typically, these involve melting chocolate, cheese, or some other substance on a plate that is prevented from rotating. In this article I describe a more dynamic and colorful technique that utilizes a temperature-sensitive liquid crystal sheet. With this method one can not only measure the wavelength of the microwaves, but also calculate the speed of these waves, which intriguingly turns out to be the speed of light. It also has the advantage of looking more like a wave than the other methods.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://aapt.scitation.org/journal/pte
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A
Author Affiliations: N/A