Parabolic, Reflector

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A polished surface of metal, or any other suitable material, applied for the purpose of reflecting rays of light, heat, or sound in any required direction.


Logan Marshall, Ed. International Self-Pronouncing Reference Library (five vols.) (Philadelphia, PA: International Press, 1911)


TIFF (full resolution)

2052×2400, 714.0 KiB

Large GIF

875×1024, 92.8 KiB

Medium GIF

547×640, 47.4 KiB

Small GIF

273×320, 17.4 KiB