Crova's Disc

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 Code Number :   3B20.70

Disclaimer:

Reprinted by permission of Dick Berg, University of Maryland, for use on this website.

The demonstrations contained and referenced herein are listed for the purposes of cataloging and describing physics demonstrations which should be conducted only under the direction of a trained instructional support professional or physicist. These demonstrations are not presented for the purpose of being conducted by persons unconnected to this Facility and/or persons not consulting with or being supervised by the recognized instructional support professional or physicist and his/her staff. The University is responsible only for those demonstrations carried out using its own equipment using established safety and scheduling policies, and bears no responsibility for those choosing to use this source material for their own purposes. All demonstrations described and contained herein are public domain, and can also be found in reference materials in libraries, bookstores, and electronic sources.

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Condition :   Good   
Principle :   Wave Motion
Area of Study :  Acoustics 
Equipment :   Overhead Crova's disk assembly
Procedure :   Place the assembly on the overhead projector and focus the slot in the assembly onto the wall.  Rotate the disc and the image of the lines as viewed through the slot should take the appearance of either standing or longitudinal waves.
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   References

Randall D. Peters,  "Traveling Wave Pedagogy Using an Oscilloscope,"  TPT,  Vol. 28, # 5, p. 337, (May 1990).

S. D. Cloud, "Oscilloscope Traveling Wave Experiment", TPT, Vol. 23, # 3, Mar. 1985, p. 157 - 158.

R. D. Edge, "An Op Art Wave Demonstration", TPT, Vol. 8, # 9, Dec. 1970, p. 521.

 

5.04:  R.D. Edge, "Longitudinal Waves - Crova's Disc," American Association of Physics Teachers.



Mail Questions and Comments to:  Dale Stille