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| Description: The Inverse-Square Law (a) The same amount of radiation from a light source must illuminate an ever-increasing area as the distance from the light source increases. The decrease in brightness follows the inverse-square law, which means, for example, that tripling the distance decreases the brightness by a factor of 9. Picture Stats: Views: 726 Filesize: 200.3kB Height: 900 Width: 1317 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=18381 |