| http://www.w3.org/ns/prov#value | - FIG. 4a is a perspective or isometric view of three elongated mirror segments arrayed in accordance with the invention, and FIG. 4b is a simplified plan view of two of the mirror segments of FIG. 4a illustrating specular reflection paths, FIGS. 4a and 4b are together referred to as FIG. 4;
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