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A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threaded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.
Darmstadtium is a synthetic chemical element; it has symbol Ds and atomic number 110. It is extremely radioactive: the most stable known isotope, darmstadtium-281, has a half-life of approximately 14 seconds.
In the late 1980s, the GSI team attempted to synthesize element 110 by bombarding a target consisting of various uranium isotopes— 233 U, 235 U, and 238 U—with accelerated argon-40 ions. No atoms were detected; [ 22 ] a limiting cross section of 21 pb was reported.
Curious about the most expensive items sold on eBay? From a gigayacht to a U.S. town, here are 10 of the most extravagant listings we could find.
An electric battery is a source of electric power consisting of one or more electrochemical cells with external connections [1] for powering electrical devices. When a battery is supplying power, its positive terminal is the cathode and its negative terminal is the anode. [2] The terminal marked negative is the source of electrons.
Element Six is a company specialised in providing synthetic diamond, cubic boron nitride and other superhard materials for industrial use. Part of the De Beers Group , Element Six employs over 1,900 people and its primary manufacturing sites are located in the UK, Ireland, Germany, South Africa, and the US.
Navy E-6B Mercury at the Mojave Air and Space Port. Like the E-3 Sentry Airborne Warning and Control System aircraft, the E-6 is adapted from Boeing's 707-320 airliner. Rolled out at Boeing's Renton Factory in December 1986, [2] the first E-6 made its maiden flight in February 1987, when it was flown to nearby Boeing Field in south Seattle for fitting of mission avionics.
Dry cell battery by Wilhelm Hellesen 1890. Many experimenters tried to immobilize the electrolyte of an electrochemical cell to make it more convenient to use. The Zamboni pile of 1812 is a high-voltage dry battery but capable of delivering only minute currents. Various experiments were made with cellulose, sawdust, spun glass, asbestos fibers ...