| http://www.w3.org/ns/prov#value | - In other embodiments, the selected diffuser may have a response centered around an angle other than 0???, for example, centered at ten)(10???), twenty (20), thirty (30), forty (40), 45 (forty five), 50 (fifty), 60 (sixty), 70 (seventy), 80 (eighty) degrees, or on any other view angle.
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