achromatic edition

  • 21Octant (instrument) — Octant. This instrument, labelled Crichton London, Sold by J Berry, Aberdeen, appears to have an ebony frame with ivory scale, vernier and signature plate. The index arm and mirror supports are brass. Rather than use a sighting telescope, this… …

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  • 22Telescope — A telescope is an instrument designed for the observation of remote objects and the collection of electromagnetic radiation. The first known practically functioning telescopes were invented in the Netherlands at the beginning of the 17th century …

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  • 23Tasco — Infobox Company company company type = Corporation foundation = 1954 founder = George Rosenfield location city = Miami, FL location country = USA industry = Technology company slogan = Designed to Make the Larger than Life Even Larger. homepage …

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  • 24Mark Moebius — (* 8. September 1973 in Summit, New Jersey, USA) ist ein deutscher Komponist. Inhaltsverzeichnis 1 Leben 2 Stipendien und Auszeichnungen 3 Werke …

    Deutsch Wikipedia

  • 25Ruggiero Giuseppe Boscovich —     Ruggiero Giuseppe Boscovich     † Catholic Encyclopedia ► Ruggiero Giuseppe Boscovich     A Dalmatian Jesuit and well known mathematician, astronomer, and natural philosopher, b. at Ragusa, 18 May 1711; d. at Milan, 13 February, 1787. He was… …

    Catholic encyclopedia

  • 26gray — 1. adjective /ɡreɪ/ grey 2. noun /ɡreɪ/ a) grey; an achromatic colour b) A penny with a tail on both sides, used for cheating. (Reference: Sidney J. Baker, The Australian Language, second edition, 1966, chapter XI section 3, page 243.) …

    Wiktionary

  • 27Dialyte lens — A dialyte lens (sometimes called a dialyt[1]) is a compound lens design that corrects optical aberrations where the lens elements are widely air spaced.[2] The design is used to save on the amount of glass used for specific elements or where… …

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  • 28Dynamic Stillness — Studio album by Steve Roach Released May 5, 2009 …

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  • 29Nonimaging optics — (also called anidolic optics)[1][2] is the branch of optics concerned with the optimal transfer of light radiation between a source and a target. Unlike traditional imaging optics, the techniques involved do not attempt to form an image of the… …

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