Labels:amusement park | bannister | crt screen | monitor | pasture | plant | quadrangular prism | seat | sky | stairs OCR: UMBR The darkest part of a shadow in which light is completely off by an intervening object. lighter part surrounding the umbra in which light is only partially cut off Is called the penumbra. The darker, central portion of sunspot surrounded by the lighter penumbra Umbra Penumbra MBRA
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