| Gas Lens |
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| References |
Pietro Ferraro, "Optics with Balloons", TPT, Vol. 34, # 5, May 1996, p. 274. T. R. Sandin, "Viscosity Won't Curve It", TPT, Vol. 24, # 2, Feb. 1986, p. 70. Thomas B. Greenslade, Jr., "The Acoustic Lens", TPT, Vol. 16, # 2, p. 100, Feb. 1978 Richard Reis, "A Sound Lens", TPT, Vol. 6, # 1, Jan. 1968, p. 40. |
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