microscope. It is used to view smaller | |specimens such as cell structures which cannot be seen at lower levels of magnification. | |Essentially‚ a compound microscope consists of structural and optical components. However‚ within these two basic systems‚ there are some | |essential components that every microscopist should know and understand. | |These key microscope parts
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environment in the future. What do the opticians do? “Opticians are health professionals trained to supply‚ prepare and dispense optical appliances‚ interpret prescriptions prepared by ophthalmologists and optometrist‚ and fit‚ adjust and adapt optical appliances” (College of Opticians of Ontario).In other words‚ the optician can provide‚ fit and adjust contact lenses and eye glasses who has abnormal vision. In Ontario‚ required opticians to complete formal training and education in opticianary and
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INTRODUCTION NIKON’S BACKGROUND Nikon Company was founded in 1917 and is three of Japan’s foremost makers of optical equipment merged together in order to offer a full line of optical products during that time. The company was called Nippon Kogaku (Japan Optics) and began producing optical glass in 1918. By 1932‚ Nippon Kogaku had designed its own camera lenses‚ the Nikkor brand. Nippon Kogaku was listed on the Tokyo Stock Exchange in 1939. Nippon Kogaku expanded during the 1920s and 1930s
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asked Ray-Ban for a new type of air force eyewear that would protect pilots from glare at high altitudes while at the same time ensuring a clear field of vision. The company took up the challenge and succeeded in developing a new pair of glasses with lenses that could block out a high proportion of visible light. This marked the birth of Ray-Ban’s first‚ green-lens ANTI GLARE eyewear. The first model to go on sale to the public - in 1936 - featured a plastic frame with the classic Aviator shape. 1937
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image that is captured by the camera’s sensor. The design of DSLR cameras Like SLRs DSLRs typically use interchangeable lenses (1) with a proprietary lens mount. A movable mechanical mirror system (2) is switched down (exact 45-degree angle) to direct light from the lens over a matte focusing screen (5) via a condenser lens (6) and a pentaprism/pentamirror (7) to an optical viewfinder eyepiece (8). Most[citation needed] of the entry level DSLRs use a pentamirror instead of the traditional pentaprism
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Disadvantages of Each). HISTORY OF DIGITAL CAMERAS The World‘s First Digital Camera by Kodak and Steve Sasson The Evolution of Digital Cameras A film-free camera was patented as early as 1972 by Texas Instruments‚ but Kodak researcher Steve J. Sasson‚ built what was to become the first true digital camera in the middle of the 1970s. Weighing over eight pounds‚ Sasson‘s device used a number of complex circuit boards to capture one image onto a cassette—taking
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products‚ precision equipment‚ and instruments. Nikon’s efforts to provide the kind of products and technologies that will exceed its customers’ expectations are already achieving impressive results. Nikon is perhaps most well known for its reputation as a world leader in imaging products‚ and its technologies continue to play a significant role in defining the photographic industry. Beyond photography‚ Nikon Inc. is also the leading innovator of precision optical lens and imaging devices. Our array
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Technology Devices to Overcome the Limitations of Sight and Hearing Humans have sight and hearing limitation. Without any devices‚ our sight and hearing was limited. Most of the limitation of sight can be overcome with the help of certain optical instruments such as magnifying glass‚ microscope‚ binoculars and others. The range of frequency of hearing in human 20 Hz to 20 000 Hz. It was different according to the age of a person. Hearing limitations can be overcome by using devices such as microphone
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Bibliography: All About Vision. 2006. "Statistics on Ophthalmic Industry Sales". Available: http://www.allaboutvision.com/resources/statistics-ophthalmic-industry-sales.htm Antonelli‚ Paola Bellis‚ Mary. 2006. "The History of Contact Lenses". Available: http://inventors.about.com/od/gstartinventions/a/glass_4.htm Dictionary of the Middle Ages Friedman‚ Morgan S. 2000. "The Inflation Calculator". Available: http://www.westegg.com/inflation/ Kelley‚ Alberta Panati‚ Charles. The browser
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them‚ accounted for many injuries. • Contact with chemicals - Accounted for about one-Fifth of all eye injuries. • Optical Radiation: Welding – Using welding helmets such as safety spectacles or goggles are intended to shield the eyes and face from optical radiation‚ heat‚ and impact. Glare – Controlling glare with special-purpose spectacles that includes filter or special purpose lenses‚ tinted or visor-type shade‚ and changes in your work area to provide protection against eye strain. Lasers – Exposure
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