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GEOMETRIC OPTICS DEMONSTRATIONS 6A20.10 REFLECTION FROM CURVED SURFACES 6A40.47 TWINKLE TWINKLE LITTLE STAR 6A44.40 LASER AND FIBER OPTICS 6A44.35 FRUSTRATED TOTAL INTERNAL REFLECTION 6A44.41 TOTAL INTERNAL REFLECTION TELESCOPES (6A70) ARE LISTED UNDER ASTRONOMY. |