turret diaphragm
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Optical microscope — Microscope Uses Small sample observation Notable experiments Discovery of cells Inventor Hans Lippershey Zacharias Jans … Wikipedia
Condenser (microscope) — A condenser is one of the main components of the optical system of many transmitted light compound microscopes. A condenser is a lens that serves to concentrate light from the illumination source that is in turn focused through the object and… … Wikipedia
F-number — In optics, the f number (sometimes called focal ratio, f ratio, or relative aperture [Smith, Warren Modern Lens Design 2005 McGraw Hill] ) of an optical system expresses the diameter of the entrance pupil in terms of the focal length of the lens; … Wikipedia
Leica Camera — Coordinates: 50°32′35″N 008°23′25″E / 50.54306°N 8.39028°E / 50.54306; 8.39028 … Wikipedia
motion-picture technology — Introduction the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… … Universalium
Weighing scale — Emperor Jahangir (reign 1605 1627) weighing his son Shah Jahan on a weighing scale by artist Manohar (AD 1615, Mughal dynasty, India). A weighing scale (usually just scales in UK and Australian English, weighing machine in south Asian English or… … Wikipedia
Cupola (disambiguation) — Cupola, a diminutive of the Latin cupa (barrel) and thus meaning little barrel , is used for dome shaped items, including: An architectural dome element Cupola, a (usually dome shaped) structure located on top of a larger roof or dome (for a roof … Wikipedia
Glossary of nautical terms — This is a glossary of nautical terms; some remain current, many date from the 17th 19th century. See also Wiktionary s nautical terms, Category:Nautical terms, and Nautical metaphors in English. Contents: A B C D E F G H I J K L M N O P Q R … Wikipedia
Rectaflex — was the name of an Italian camera maker from 1947 to 1953. It was also the name of their sole model, the only Italian single lens reflex camera ever built. The original Rectaflex The Rectaflex was a 35mm SLR camera with a focal plane shutter,… … Wikipedia
