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ERIC Number: EJ1024887
Record Type: Journal
Publication Date: 2013-Oct
Pages: 2
Abstractor: As Provided
Reference Count: 8
ISSN: ISSN-0031-921X
How to Use a Candle to Study Sound Waves
Carvalho, P. Simeão; Briosa, E.; Rodrigues, M.; Pereira, C.; Ataíde, M.
Physics Teacher, v51 n7 p398-399 Oct 2013
It is well known that sound waves in air are longitudinal waves. Although teachers use analogies such as compressing horizontal springs to demonstrate what longitudinal waves look like, students still present some difficulty in understanding that (1) sound waves correspond to oscillations of air particles, and (2) there is no "air flow" (transport of particles) in sound waves. These difficulties arise from the impossibility to actually "see" air particles moving, and from the common sense idea that free particles always have translational motion
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