| 41. | One of the continuing problems with sensitive vertical seismographs is the buoyancy of their masses.
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| 42. | This is found to correlate well with the seismologic readings from long-period seismographs.
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| 43. | The school is one of the few in the United States to have a seismograph.
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| 44. | The most powerful of the series had a largest earthquakes ever recorded on a seismograph.
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| 45. | The seismographs sensed and located earthquakes 1.5 magnitude and larger in the area.
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| 46. | He has an amazing emotional seismograph,
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| 47. | Gee says the seismograph has been replaced by computer screens and earthquake beepers worn on belts.
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| 48. | They can be like little seismographs.
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| 49. | He's a seismograph ."
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| 50. | Tracked across the season, his velocity has read like a seismograph, dipping and spiking.
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