| http://www.w3.org/ns/prov#value | - FIG. 7 is a graph for illustrating the operation of a collimator constructed in accordance with the present invention, FIG. 8 is an elevation view in section of a collimator shown in FIG. 5 for the purpose of exposing the radial dividers, the view being taken along the lines 8-8 of FIG. 6.
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