Acoustic Fresnel Zone 'Lens'

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1 total messages Started by kenneth k konvicka Mon, 28 Dec 1992 03:42

#39

Author: kenneth k konvicka
Date: Mon, 28 Dec 1992 03:42

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Photo in The Physics Teacher mag, Dec 92, p.560, has one of these in rt. side
of photo.  Would anyone know how to make one?  It's a 6ft tall plywood-looking
piece with concentric circular sections cut out.
Need one for science class demo.  
Thanks.

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