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| What waves are included in the electromagnetic spectrum? | |
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| The electromagnetic spectrum includes radio waves,infrared rays, visible light, ultraviolet rays X-rays, and gamma rays. | |
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| Radio waves are used in radio and television technologies, as well as in microwave ovens and radar. | |
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| How are infrared rays use? | |
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| Infrared rays are used as a source of heat and to discover areas of heat differnces. | |
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