| 21. | It's effectively infinite for a standing wave, even in vacuum.
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| 22. | Stretched octaves are caused by the physics of standing waves in a stretched wire.
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| 23. | Conversely, standing waves are an indication that reflections are present.
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| 24. | Faraday observed standing waves on the surface of a liquid in a vibrating container.
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| 25. | Thus signals near the design frequency will continue to create a standing wave pattern.
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| 26. | There is a relationship between the measures of reflection coefficient and standing wave ratio.
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| 27. | The variations appear to be periodic, resembling a standing wave.
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| 28. | Standing waves were first noticed by Michael Faraday in 1831.
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| 29. | The upper figure shows three standing waves in a box.
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| 30. | The standing wave patterns produced are called " modes ".
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