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  2. Electric generator - Wikipedia

    en.wikipedia.org/wiki/Electric_generator

    Download QR code; Wikidata item; Print/export Download as PDF; ... An engine-generator is the combination of an electrical generator and an engine (prime mover ...

  3. Static site generator - Wikipedia

    en.wikipedia.org/wiki/Static_site_generator

    Server-side template system. Many server-side template systems have an option to publish output pages on the server, where the published pages are static.This is common on content management systems, like Vignette, but is not considered out-server generation.

  4. Free-piston engine - Wikipedia

    en.wikipedia.org/wiki/Free-piston_engine

    Free-piston engine used as a gas generator to drive a turbine. A free-piston engine is a linear, 'crankless' internal combustion engine, in which the piston motion is not controlled by a crankshaft but determined by the interaction of forces from the combustion chamber gases, a rebound device (e.g., a piston in a closed cylinder) and a load device (e.g. a gas compressor or a linear alternator).

  5. Technetium-99m generator - Wikipedia

    en.wikipedia.org/wiki/Technetium-99m_generator

    The generator is washed of 99 Tc and 99m Tc at the end of the manufacturing process of the generator, but the ratio of 99 Tc to 99m Tc then builds up again during transport or any other period when the generator is left unused. The first few elutions will have reduced effectiveness because of this high ratio.

  6. Parity-check matrix - Wikipedia

    en.wikipedia.org/wiki/Parity-check_matrix

    Formally, a parity check matrix H of a linear code C is a generator matrix of the dual code, C ⊥. This means that a codeword c is in C if and only if the matrix-vector product Hc ⊤ = 0 (some authors [1] would write this in an equivalent form, cH ⊤ = 0.) The rows of a parity check matrix are the coefficients of the parity check equations. [2]

  7. Mobile payment - Wikipedia

    en.wikipedia.org/wiki/Mobile_payment

    QR code is a square two-dimensional bar code. QR codes have been in use since 1994. [48] Originally used to track products in warehouses, QR codes were designed to replace the older one-dimensional bar codes. The older bar codes just represent numbers, which can be looked up in a database and translated into something meaningful.

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