| 41. | They are lighter than the conventional cathode ray tube monitor.
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| 42. | The early meteorologists had to watch a cathode ray tube.
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| 43. | Zworykin described cathode ray tubes as both transmitter and receiver.
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| 44. | X-ray tubes are used in medical imaging among other uses.
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| 45. | Cathode ray tubes are what are used to display the information on your computer.
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| 46. | Massachusetts has already banned cathode-ray tubes in local dumps.
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| 47. | The indicator display consisted of two cathode ray tubes.
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| 48. | Hampson also made a minor improvement to X-ray tubes.
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| 49. | The cathode ray tubes in PC monitors are particularly toxic, with lead, mercury and cadmium.
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| 50. | Programs are displayed on the same old-fashioned cathode-ray tubes.
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