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Authors: | MOON P SPENCER D E |
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Institution: | 1. Massachusetts Institute of Technology, Cambridge, Mass.USA;2. Brown University, Providence, R. I.USA |
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Abstract: | This paper, the first of two dealing with ultrasonic delay lines, is concerned mainly with the theoretical considerations involved in the general process of ultrasonic propagation. The transducer action is given considerable attention and an equivalent circuit employing a transmission line as an element is demonstrated. The diffraction spreading of the beam and absorptive losses in the transmitting medium are also discussed. |
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