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| Description: This photograph shows the visible colors separated by a prism. The two thermometers in the region illuminated by visible light have temperatures less than the thermometer to the right of red. Therefore, there must be more radiation energizing (that is, heating) the warmest thermometer. This energy is what we call infrared radiation—invisible to the human eye, but detectable as heat Picture Stats: Views: 874 Filesize: 291.5kB Height: 900 Width: 363 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=15863 |