|
A0 (other)
A0, A-0, A0, or a0 may refer to: * 101 A0 and 103 A0, two versions of the German Heinkel Tourist moped * A0 paper size, an international ISO 216 standard paper size (841 × 1189 mm), which results in an area very close to 1 m2 * A0 highway (Zimbabwe), a highway which orbits Zimbabwe * A0, the lowest A (musical note) note on a standard piano * A0, a climbing grade * A00, Irregular chess openings code in the Encyclopaedia of Chess Openings * A-0 Geyser, a geyser in Yellowstone National Park * A-0 System, an early compiler related tool developed for electronic computers * L'Avion, IATA airline designator for the French airline * Characters of type A0, an older term for algebraic Hecke characters * a0, the accepted mathematical symbol for the Bohr radius * Haplogroup A00 and A0; see Y-chromosomal Adam and Haplogroup A (Y-DNA) * A0, a subdivision in stellar classification * A0, sometimes written as 0xA0, is the hexadecimal representation of non-breaking space in various characte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinkel Tourist
The Heinkel Tourist is a motor scooter that was made by Heinkel Flugzeugwerke from 1953 to 1965. More than 100,000 were manufactured and sold.The Encyclopedia of the Motorcycle: Heinkel TouristThe Ultimate Motorcycle Book: Scooters — Heinkel Tourist The Tourist was sold as an upscale scooter. It was more expensive than a Vespa or a Lambretta, and was generally heavier, more comfortable, and more stable.Henikel Trojan Club — Scooters1955 Vespa GS150 VS1 versus 1957 Heinkel Tourist 175 It was available with a speedometer, a steering lock, a clock, a luggage carrier, and a spare wheel. It was referred to in England as "The Rolls-Royce of Scooters" and was advertised by a dealer in Massachusetts as "The Cadillac of Scooters".A History of Heinkel in the U.S. The Tourist had a tubular steel frame to which pressed steel body panels were mounted. The engine of the Tourist was mounted in the frame and drove the rear wheel by a chain enclosed in the swingarm. Thus shelter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplogroup A (Y-DNA)
Haplogroup A is a human Y-chromosome DNA haplogroup, which includes all living human Y chromosomes. Bearers of extant sub-clades of haplogroup A are almost exclusively found in Africa (or among descendants of populations which have recently left Africa), in contrast with haplogroup BT, bearers of which participated in the Out of Africa migration of anatomically modern humans. The known branches of haplogroup A are A00, A0, A1a, and A1b1; these branches are only very distantly related, and are not more closely related to each other than they are to haplogroup BT. Origin There are terminological difficulties, but as "haplogroup A" has come to mean "the foundational haplogroup" (viz. of contemporary human population), haplogroup A is not defined by any mutation but refers to any haplogroup which is not descended from the haplogroup BT, i.e. defined by the absence of the defining mutation of that group (M91). By this definition, haplogroup A includes all mutations that took plac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Messerschmitt Me 210
The Messerschmitt Me 210 was a German heavy fighter and ground-attack aircraft of World War II. Design started before the war, as a replacement for the Bf 110. The first examples were ready in 1939, but they proved to have unacceptably poor flight characteristics due to serious wing planform and fuselage design flaws. A large-scale operational testing program throughout 1941 and early 1942 did not cure the type's problems. The design entered limited service in 1942, but was soon replaced by the Messerschmitt Me 410 Hornisse, a further development of the Me 210. The failure of the Me 210's development program meant the ''Luftwaffe'' was forced to continue operating the Bf 110 after it had become outdated, despite mounting losses. Design and development Messerschmitt designers had started working on an upgrade of the Bf 110 in 1937, before the production version of the Bf 110 had even flown. In late 1938, the Bf 110 was just entering service, and the RLM started looking ahead ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Junkers Ju 87
The Junkers Ju 87 or Stuka (from ''Sturzkampfflugzeug'', "dive bomber") was a German dive bomber and ground-attack aircraft. Designed by Hermann Pohlmann, it first flew in 1935. The Ju 87 made its combat debut in 1937 with the Luftwaffe's Condor Legion during the Spanish Civil War of 1936–1939 and served the Axis in World War II from beginning to end (1939–1945). The aircraft is easily recognisable by its inverted gull wings and fixed spatted undercarriage. Upon the leading edges of its faired main gear legs were mounted ram-air sirens known as ', which became a propaganda symbol of German air power and of the so-called ''Blitzkrieg'' victories of 1939–1942, as well as providing Stuka pilots with audible feedback as to speed. The Stuka's design included several innovations, including automatic pull-up dive brakes under both wings to ensure that the aircraft recovered from its attack dive even if the pilot blacked out from the high g-forces. The Ju 87 operated with c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henschel Hs 126
The Henschel Hs 126 was a German two-seat reconnaissance and observation aircraft of World War II that was derived from the Henschel Hs 122. The pilot was seated in a protected cockpit under the parasol wing and the gunner in an open rear cockpit. The prototype aircraft frame was that of a Hs 122A fitted with a Junkers engine. The Hs 126 was well received for its good short takeoff and low-speed characteristics which were needed at the time. It was put into service for a few years, but was soon superseded by the general-purpose, STOL Fieseler Fi 156 ''Storch'' and the medium-range Focke-Wulf Fw 189 "flying eye". Development The first prototype was not entirely up to ''Luftwaffe'' standards; it was followed by two more development planes equipped with different engines. Following the third prototype, ten pre-production planes were built in 1937. The Hs 126 entered service in 1938 after operational evaluation with the ''Legion Condor'' contingent to the Spanish Civil War. Operati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heinkel He 177
The Heinkel He 177 ''Greif'' (Griffin) was a long-range heavy bomber flown by the ''Luftwaffe'' during World War II. The introduction of the He 177 to combat operations was significantly delayed, by both problems with the development of its engines, and frequent changes to its intended role. Nevertheless, it was the only long-range, heavy bomber to become operational with the ''Luftwaffe'' during the war. The He 177 had a payload/range capability similar to that of four-engined heavy bombers used by the Allies in the European theatre. Work on the design began in response to a 1936 requirement, known as Bomber A, issued by the RLM for a purely strategic bomber. Thus the He 177 was intended originally to be capable of a sustained bombing campaign against Soviet manufacturing capacity, deep inside Russia. In contrast to its heavy payload and very wide, planform, the specifications called for the design to have only two very powerful engines. To deliver the power ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siebel Si 204
The Siebel Si 204 was a small twin-engined transport and trainer aircraft developed in World War II. It was based on the Siebel Fh 104, Fh 104 Hallore. Originally designed in response to an Ministry of Aviation (Germany), Ministry of Aviation development order for a small civil transport aircraft in 1938, it was eventually produced for the Luftwaffe. Development and production The Si 204 was planned as a small all-metal passenger aircraft with two crew and eight passengers for German airline Deutsche Luft Hansa (DLH). Development was initiated in 1938. The contractor was, as usual, the RLM, but the development was conducted in close collaboration between DLH and Siebel in Halle (Saale), Halle. After the beginning of the war, the aircraft was redesigned as a trainer aircraft with a full "stepless" glass cockpit, as had been initiated with the Heinkel He 111#He 111 P, He 111P in early 1938, with no separate flat windscreen for the pilot (much as almost all German bomber aircraf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter HWK 509
The Walter HWK 109-509 was a German liquid-fuel bipropellant rocket engine that powered the Messerschmitt Me 163 Komet and Bachem Ba 349 aircraft. It was produced by Hellmuth Walter Kommanditgesellschaft (HWK) commencing in 1943, with licensed production by the Heinkel firm's facilities in Jenbach, Austria. Design and development Early versions of the Me 163 had been powered by an earlier design running on a "cold engine" fueled with Z-Stoff. This fuel tended to clog the jets in the combustion chamber, causing fluctuations in power and potentially explosions. Worse, however, was the fact that the engine could not be throttled, and when the aircraft leveled off after its climb to altitude it quickly accelerated to speeds that caused serious compressibility issues. The RLM demanded that a version be developed with a throttle. During this period Walter had also been working with a new fuel known as C-Stoff that gave off significant heat and was thus known as the "hot engine". C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A0 Road (Sri Lanka)
The A 0 is an A-Grade road in Sri Lanka. It connects Kollupitiya and Sri Jayawardanapura, the nation's capital. The highway passes through Rajagiriya Rajagiriya is part of the Sri Lanka's administrative capital of Sri Jayawardenapura. A fairly large suburb bordering Colombo, Rajagiriya lies between Borella and Ethul Kotte, straddling Parliament Road. History The area was originally known a .... {{SriLanka-road-stub A00 highway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-breaking Space
In word processing and digital typesetting, a non-breaking space, , also called NBSP, required space, hard space, or fixed space (though it is not of fixed width), is a space character that prevents an automatic line break at its position. In some formats, including HTML, it also prevents consecutive whitespace characters from collapsing into a single space. Non-breaking space characters with other widths also exist. Uses and variations Despite having layout and uses similar to those of whitespace, it differs in contextual behavior. Non-breaking behavior Text-processing software typically assumes that an automatic line break may be inserted anywhere a space character occurs; a non-breaking space prevents this from happening (provided the software recognizes the character). For example, if the text "100 km" will not quite fit at the end of a line, the software may insert a line break between "100" and "km". An editor who finds this behavior undesirable may choose to use a n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stellar Classification
In astronomy, stellar classification is the classification of stars based on their stellar spectrum, spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a Prism (optics), prism or diffraction grating into a spectrum exhibiting the Continuum (spectrum), rainbow of colors interspersed with spectral lines. Each line indicates a particular chemical element or molecule, with the line strength indicating the abundance of that element. The strengths of the different spectral lines vary mainly due to the temperature of the photosphere, although in some cases there are true abundance differences. The ''spectral class'' of a star is a short code primarily summarizing the ionization state, giving an objective measure of the photosphere's temperature. Most stars are currently classified under the Morgan–Keenan (MK) system using the letters ''O'', ''B'', ''A'', ''F'', ''G'', ''K'', and ''M'', a sequence from the hottest (''O'' type) to the coo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Y-chromosomal Adam
In human genetics, the Y-chromosomal most recent common ancestor (Y-MRCA, informally known as Y-chromosomal Adam) is the Patrilineality, patrilineal most recent common ancestor (MRCA) from whom all Present day, currently living humans are descended. He is the most recent male from whom all living humans are descended through an unbroken line of their male ancestors. The term Y-MRCA reflects the fact that the Y chromosomes of all currently living human males are directly derived from the Y chromosome of this remote ancestor. The analogous concept of the matrilineal most recent common ancestor is known as "Mitochondrial Eve" (mt-MRCA, named for the matrilineal transmission of mtDNA), the most recent woman from whom all living humans are descended matrilineality, matrilineally. As with "Mitochondrial Eve", the title of "Y-chromosomal Adam" is not permanently fixed to a single individual, but can advance over the course of human history as paternal lineages become extinct. Estimates of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
