earthquake sensing transducer

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Mechanical resonance — This article is about mechanical resonance in physics and engineering. For a general description of resonance, see resonance. For mechanical resonance of sound including musical instruments, see acoustic resonance. For the music album by the… … Wikipedia
Surface acoustic wave — A surface acoustic wave (SAW) is an acoustic wave traveling along the surface of a material having some elasticity, with an amplitude that typically decays exponentially with the depth of the substrate. This kind of wave is commonly used in… … Wikipedia

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