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The Necklace Nebula (PN G054.2-03.4) is a 19-trillion-kilometre-wide (2.0 light-year-wide) [1] planetary nebula located about 15,000 light-years away in the northern constellation Sagitta. It was discovered in 2005 from the Isaac Newton Telescope Photometric H-alpha Survey (IPHAS), a ground-based H-alpha planetary nebula study of the North ...
Swiss classification: 4/9; This wheel arrangement was proposed by Lima Locomotive Works in 1949 as a continuation of their "Super Power" concept, essentially an expansion of the 4-8-4. A larger firebox similar to the ones on the 2-6-6-6 locomotives built by Lima would have been fitted, allowing for greater power at speed. Despite promotion by ...
Freight engines with an 0-8-0 wheel arrangement were once very popular in Germany. The Prussian state railways had several types of 0-8-0s that were all classified as G7, G8 and G9. The latest of these, the Prussian G 8.1, was the most numerous German state railway locomotive with over five thousand examples being built between 1913 and 1921.
An 0-8-6, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is a locomotive with no leading wheels, eight driving wheels (4 axles) fixed in a rigid frame, and six trailing wheels (normally mounted in a trailing truck). All locomotives using this wheel arrangement were tank locomotives.
8.6mm Blackout (8.6×43 mm), also sometimes referred to as 8.6 BLK, [1] is a centerfire rifle cartridge developed by the firearms manufacturer Q, LLC. [3] It utilizes a shortened case from the 6.5mm Creedmoor necked up to an 8.6 mm caliber (8.585 mm or 0.338 in diameter) projectile. 8.6 Blackout is designed for use in bolt-action rifles or as a caliber conversion for AR-10 style rifles.
0 (zero) is a number representing an empty quantity.Adding 0 to any number leaves that number unchanged. In mathematical terminology, 0 is the additive identity of the integers, rational numbers, real numbers, and complex numbers, as well as other algebraic structures.