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- Newsgroups: alt.sci.physics.acoustics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!tamsun.tamu.edu!inetg1!news.oryx.com!xslkkk
- From: xslkkk@oryx.com (kenneth k konvicka)
- Subject: Acoustic Fresnel Zone 'Lens'
- Message-ID: <BzyAA4.Atz@oryx.com>
- Sender: usenet@oryx.com (USENET News System)
- Organization: Oryx Energy, Dallas, Texas.
- X-Newsreader: Tin 1.1 PL5
- Date: Mon, 28 Dec 1992 03:42:03 GMT
- Lines: 6
-
- 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.
-
-