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The SPAD S.XIII is a French biplane fighter aircraft of the First World War, developed by Société Pour L'Aviation et ses Dérivés (SPAD) from the earlier and highly successful SPAD S.VII.
Commercial single-photon avalanche diode module for optical photons. A single-photon avalanche diode (SPAD), also called Geiger-mode avalanche photodiode [1] (G-APD or GM-APD [2]) is a solid-state photodetector within the same family as photodiodes and avalanche photodiodes (APDs), while also being fundamentally linked with basic diode behaviours.
The famous Sopwith Camel and the SPAD XIII types used twin synchronized Vickers, as did most British and French fighters between 1918 and the mid-1930s. In the air, the weighty water-cooling system was rendered redundant by low temperatures at high altitude and the constant stream of air passing over the gun (and lack of any need for sustained ...
SPAD S.A.2 SPAD VII taking off SPAD S.XVI two seater SPAD S.XIII. After Armand Deperdussin's bankruptcy in 1913 the company went into administration and the name was changed to Société Provisoire des Aéroplanes Deperdussin, the first use of the SPAD acronym. With Deperdussin's disgrace, financing stopped and the future of the SPAD company ...
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SPAD VII, SPAD S.XII and SPAD S.XIII, French fighter planes of World War I produced by Société Pour L'Aviation et ses Dérivés; A-1 Skyraider, nicknamed Spad, an attack aircraft (1950s and 1960s) Self-propelled air defence, weapons
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Several of the CPK colors refer mnemonically to colors of the pure elements or notable compound. For example, hydrogen is a colorless gas, carbon as charcoal, graphite or coke is black, sulfur powder is yellow, chlorine is a greenish gas, bromine is a dark red liquid, iodine in ether is violet, amorphous phosphorus is red, rust is dark orange-red, etc.