achromatic lens

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achromatic lens

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).

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Blair, Robert			Although instrument-makers like Culpepper and Cuff made beautiful equipment, the real improvement in the microscope came with the invention of the achromatic lens. Microscope stands up to scrutiny; Under the Hammer by Liverpool Echo (Liverpool, England)			Achates Acheampong, Ignatius Kutu Achebe, Chinua Achelous achene Achernar Acheron Achery, Jean Luc d' Acheson, Dean Acheson, Edward Achi Baba achievement Achill Island Achillas Achille Achille et Polyxène Achille in Sciro Achillea Achilles Achilles Tatius Achilles tendon Achillini, Alessandro Achimenes achondrite Achour, Habib achromatic lens Achron, Joseph Achse, Operation Achucarro, Joaquin Achurch, Janet Aci, Galatea e Polifemo acid acid - base balance acid amide acid rain acid rock acid salt Acide acidic oxide acidosis Acis Acis and Galatea Acis et Galatée ack Acker, Kathy Ackerman, Bruce A Ackerman, James S Ackerman, Nathan W Ackermann, Rudolph Acklins Island Ackoff, Russell L			achromasia achromasia achromasia Achromat Achromat Achromat Achromat Achromatiaceae achromatic achromatic achromatic achromatic axis achromatic axis achromatic axis achromatic axis achromatic color achromatic color achromatic color Achromatic colors Achromatic colors Achromatic colors achromatic colour Achromatic condenser Achromatic condenser Achromatic doublet Achromatic doublet Achromatic doublet Achromatic doublet achromatic fringe achromatic interval achromatic lens Achromatic lense Achromatic lense Achromatic lense Achromatic lense achromatic locus achromatic objective achromatic objective achromatic objective achromatic objective achromatic objective achromatic objective Achromatic prism Achromatic prism Achromatic telescope achromatic threshold achromatic vision achromatic vision achromatic vision achromatic vision achromatic vision achromatic vision achromatically achromatically achromatically achromaticity achromaticity achromaticity achromatin achromatin achromatin

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