PDD Nov 2015
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L2-01 OPTICAL BOARD - PLANE MIRROR
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L2-22: INFINITY MIRROR
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L3-11: OPTICAL BOARD - CONCAVE SPHERICAL MIRROR
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L3-18: FOCUSING OF HEAT WAVES - OVERHEAD PROJECTOR
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L5-11 LASER WATERFALL
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L6-01: OPTICAL BOARD - CONVERGING SPHERICAL LENS
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L6-21: OPTICAL BOARD - DIVERGING SPHERICAL LENS
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N2-02: DIFFRACTION SPECTRA - THREE SOURCES - EXPENDABLE GRATINGS
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N3-02 ADDITIVE COLOR MIXING - PROJECTORS
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N3-07: COLOR WHEEL - FLUORESCENT
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O2-03: PERSISTENCE OF VISION - MAGIC WAND
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O3-21: BENHAM TOP
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O3-22 BIDWELL'S DISC
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P2-05: PHOTO-RESISTOR RELAY
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P2-06 PHOTOELECTRIC TRUCK