| 31. | Cathode ray tubes ( CRTs ) are considered one of the hardest types to recycle.
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| 32. | Because they don't use bulky, energy-sucking cathode ray tubes, flat-panel displays are slim and light.
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| 33. | The indicator display consisted of two cathode ray tubes.
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| 34. | The cathode ray tubes in PC monitors are particularly toxic, with lead, mercury and cadmium.
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| 35. | In 1897, J . J . Thomson discovered the electron using the cathode ray tube.
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| 36. | Because they contain a vacuum ( see Cathode ray tube ), and glass breaks easily.
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| 37. | It stored data as electrically charged spots on the face of a cathode ray tube.
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| 38. | Its display technology portfolio includes cathode ray tubes for TV and LCD for avionics displays.
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| 39. | Notable products of the company included cathode ray tubes for television, starting in the 1930s.
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| 40. | By then, the flat panel display may be close to eclipsing the 109-year-old cathode ray tube.
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