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    Re: O.T.- Puzzle of a different sort
    From: Bill B
    Date: 2013 Sep 25, 02:06 -0400

    On 9/25/2013 12:51 AM, Norm Goldblatt wrote:
    > Woke up this morning and saw this pattern on the floor formed by
    > sunlight streaming through the louvered window covering. There are no
    > circular holes anywhere in sight- inside or out. Anyone want to try to
    > explain?
    
    I'll have to check deeply-buried lighting source material, but my best
    off-the-cuff SWAG is a small round light source with the louvers acting
    as apertures. I did note where the light source was blocked by solids
    such as the left-hand corner of sofa/divan/couch seat and the image
    resting on an easel in front of the louvers there were no projected
    spots on the floor.
    
    In short, a chance optical outcome. If interested I'll dig deep and post
    photographers applied-lighting examples. I feel confident that our list
    (read "discussion group") 1-8XX-dial-a-physics-friends will provide a
    more detailed coherent and scientific explanation before then ;-)
    
    
    
    
    

       
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