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ISO 3166-1 ( Codes for the representation of names of countries and their subdivisions – Part 1: Country codes) is a standard defining codes for the names of countries, dependent territories, and special areas of geographical interest. It is the first part of the ISO 3166 standard published by the International Organization for Standardization .
The Basel problem is a problem in mathematical analysis with relevance to number theory, concerning an infinite sum of inverse squares. It was first posed by Pietro Mengoli in 1650 and solved by Leonhard Euler in 1734, [1] and read on 5 December 1735 in The Saint Petersburg Academy of Sciences. [2] Since the problem had withstood the attacks of ...
Zone 5 uses eight 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.
The USRA 2-6-6-2 locomotive is a Mallet, or compound articulated type, having both low-pressure and high-pressure cylinders. The smaller high-pressure cylinders powered the rear set of driving wheels, and the larger low-pressure cylinders powered the forward set of driving wheels. The USRA 2-6-6-2 articulated locomotives were direct ...
The 2-6-6-6 (in Whyte notation) is an articulated locomotive type with two leading wheels, two sets of six driving wheels and six trailing wheels. Only two classes of the 2-6-6-6 type were built. One was the "Allegheny" class, built by the Lima Locomotive Works. The name comes from the locomotive's first service with the Chesapeake and Ohio ...
Cylinder size. 12.75 in × 15.5 in (324 mm × 394 mm) Performance figures. Power output. 1,500 hp (1.12 MW) The Baldwin DRS-6-6-1500 was a diesel-electric locomotive rated at 1,500 horsepower (1,100 kW), that rode on a pair of three-axle trucks, having a C-C wheel arrangement.
The Baldwin DT-6-6-2000 (Also referred to as the Baldwin DT6-6-2000) was a twin-engined diesel-electric transfer switcher, built by Baldwin Locomotive Works between 1946 and 1950. A single prototype using a pair of 8 cylinder naturally aspirated 608NA prime movers ( engines ) was built in 1946 for the Elgin, Joliet and Eastern Railway .
A 0-6-6-0 Mallet of the New York Central Railroad. The Kansas City Southern Railway used the type as freight engines, with pilots, and had the most of them with twelve locomotives. The 0-6-6-0 wheel arrangement was also used to a limited extent on logging railroads and in mountain terminals. The Western Maryland Railway had a small fleet of 2-6 ...