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Just as the organ project does , it would force you to think a little about things like the ends and goal in medicine , even about citizens ' personal responsibility and so forth , though it would get at those questions , not for their own sake but through a somewhat more narrow prism . The last sub-prism of a linear spline prism is automatically closed - just like the last sub-polygon in the polygon statement - if the first and last point of the sub-polygon 's point sequence are not the same . The linear and quadratic spline prisms do not need the Sturmian root solver . You can look at new ideas through the prism of your strengths . If you have the time , please also check the Spec pol aperture , i.e , through the waveplate and prism ( checking the imaging pol aperture is n't necessary - we use the spec pol aperture for both , and of course its the spec pol value thats the more important ) . The stereoscope , a binocular viewing instrument that through a combination of lenses , mirrors , and prisms provides a three-dimensional view of photographs , is one of the most important instruments used in photointerpretation . The critical design issue in either case is how the prisms are referenced from the mirror surface . Your task is to investigate how changing the lengths of the sides of a rectangular prism affects the volume and surface area of the prism . The telescope tracks satellites with a laser beam transmitted through an optical system of prisms , lenses , and mirrors .