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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Achromatic_lens
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1992-09-02
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351b
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11 lines
An achromatic lens is a combination of lenses
made from materials of different refractive
indexes, constructed in such a way as to
minimize chromatic aberration (which in a
single lens causes coloured fringes around
images because the lens diffracts the
different wavelengths in white light to
slightly different extents).
Subject by: Vince Pike