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Thread: Indirect Sunlight - definition

  1. #1 Indirect Sunlight - definition 
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    Jan 2011
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    This question came due to and explanation in my son's instruction material for his 5th grade science studies: Is it scientifically correct to say that sunlight which reaches the earth's surface at a low angle (e.g. in during wintertime) is "indirect sunlight"? I understand that sunlight is considered direct if the sun is overhead and the angle of incidence is high (close to or at 90 degrees), but is low angel sunlight just less direct as opposed to indirect? I think of indirect sunlight as reflected or dispersed sunlight.


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  3. #2  
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    Jan 2010
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    Usually it's defined by reflecting light, such as matt glass that will reflect light in many directions, surfaces such as snow, sand, water or polished surfaces which can cause snowblindness because of increased incoming light to the eyes.


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