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14N (other)
14N may refer to: * Gnome-Rhône 14N, a World War II French 14-cylinder two-row air-cooled radial engine * Kodak DCS Pro 14n, a 2002 professional F-mount digital SLR camera * Nitrogen-14 Natural nitrogen (7N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15. Fourteen radioisotopes are also known, with atomic masses ranging from 10 to 25, ... (14N), an isotope of nitrogen See also * N14 (other) {{Letter-Number Combination Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gnome-Rhône 14N
The Gnome-Rhône 14N was a 14-cylinder two-row air-cooled radial engine designed and manufactured by Gnome-Rhône just before the start of World War II. A development of the Gnome-Rhône 14K, the 14N was used on several French and even one German aircraft. Design and development The 14K's reliability was poor, so Gnome-Rhône carried out major redesign, using different materials for the pistons and valves, and enlarging the cooling fins to increase surface area by 39%. The 14N was introduced in 1937 and was quickly installed on several aircraft models. In 1939, minor improvements allowed Gnome-Rhône to increase the compression ratio from 6.1:1 to 6.8:1, which increased power. The 14N was further developed into the Gnome-Rhône 14R featuring a 2-stage supercharger, but this type was not widely used until after World War II as production of improved engines was restricted by the armistice with Germany. Variants ''Data from:''Aircraft engines of the World 1945, Aircraft engin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kodak DCS Pro 14n
The Kodak Professional DCS Pro 14n is a professional Nikon F80 based F-mount digital SLR produced by Eastman Kodak. It was announced at the photographic trade show photokina in Germany during September 2002; production examples became available in May 2003. Featuring a 13.89 Megapixel (4560 x 3048 pixels total) full frame 24 x 36 mm CMOS sensor, the DCS Pro 14n was the second full-frame digital SLR to reach the market, after the unsuccessful and short lived Contax N Digital and came one day before the successful Canon EOS-1Ds . All previous digital SLRs had sensors smaller than a film frame and thus had a crop factor larger than 1.0, making a wide-angle field of view difficult to achieve. In September 2003 Kodak announced the availability of a memory upgrade from 256 MB to 512 MB to DCS Pro 14n owners. The 512 MB version of the camera is often unofficially referred to as Kodak Professional DCS Pro 14n 512. A monochrome variant, known unofficially as Kodak Professional DCS Pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nitrogen-14
Natural nitrogen (7N) consists of two stable isotopes: the vast majority (99.6%) of naturally occurring nitrogen is nitrogen-14, with the remainder being nitrogen-15. Fourteen radioisotopes are also known, with atomic masses ranging from 10 to 25, along with one nuclear isomer, 11mN. All of these radioisotopes are short-lived, the longest-lived being nitrogen-13 with a half-life of . All of the others have half-lives below 7.15 seconds, with most of these being below 620 milliseconds. Most of the isotopes with atomic mass numbers below 14 decay to isotopes of carbon, while most of the isotopes with masses above 15 decay to isotopes of oxygen. The shortest-lived known isotope is nitrogen-10, with a half-life of . List of isotopes , - , , style="text-align:right" , 7 , style="text-align:right" , 3 , , , p ?Decay mode shown is energetically allowed, but has not been experimentally observed to occur in this nuclide. , ? , 1−, 2− , , , - , , style="text-align:r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |