| 21. | A possible way around the problem is to use acoustic filtering, such as by resonant cavity, in the speaker setup.
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| 22. | Some pulse jet designs used a tuned resonant cavity to provide the valving action through the airflow in the system.
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| 23. | When a general shape of a resonant cavity is changed, a corresponding change in resonant frequency can be approximated as:
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| 24. | The longitudinal modes of a resonant cavity are the particular standing wave patterns formed by waves confined in a cavity.
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| 25. | A problem with resonant cavities is that a high finesse cavity has narrow cavity modes, often in the low kHz range.
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| 26. | The second factor to determine a laser's emission frequencies is the optical cavity ( or resonant cavity ) of the laser.
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| 27. | This guitar still functioned acoustically, but had a smaller resonant cavity inside, which makes less sound emit from the f holes.
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| 28. | At 1998's Burning Man, a pyrophone referred to as " Satan's Calliope " was powered by ignition of propane inside resonant cavities.
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| 29. | In the klystron, the electron beam passes through a hole in a resonant cavity which is connected to the source RF signal.
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| 30. | White's 2014 conference paper suggested that resonant cavity thrusters could work by transferring momentum to the " quantum vacuum virtual plasma ".
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