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  2. E-meter - Wikipedia

    en.wikipedia.org/wiki/E-meter

    The Scientology meter was smaller, based on transistors rather than vacuum tubes, and powered by a low-voltage rechargeable battery rather than line voltage. From then on, the E-meter was a required tool for Scientology ministers. The "Hubbard Mark II" E-meter was christened in 1960 and the Hubbard Mark III shortly after. [23]

  3. Fort Banks (Massachusetts) - Wikipedia

    en.wikipedia.org/wiki/Fort_Banks_(Massachusetts)

    Fort Banks was a U.S. Coast Artillery fort located in Winthrop, Massachusetts.It served to defend Boston Harbor from enemy attack from the sea and was built in the 1809 during what is known as the Endicott period, a time in which the coast defenses of the United States were seriously expanded and upgraded with new technology. [1]

  4. Continuity tester - Wikipedia

    en.wikipedia.org/wiki/Continuity_tester

    Entry-level cable testers are essentially continuity testers. A continuity tester is an item of electrical test equipment used to determine if an electrical path can be established between two points; [1] that is if an electrical circuit can be made. The circuit under test is completely de-energized prior to connecting the apparatus. [1]

  5. Molten-salt battery - Wikipedia

    en.wikipedia.org/wiki/Molten-salt_battery

    In 2014 researchers identified a liquid sodium–cesium alloy that operates at 50 °C (122 °F) and produced 420 milliampere-hours per gram. The new material was able to fully coat, or "wet," the electrolyte. After 100 charge/discharge cycles, a test battery maintained about 97% of its initial storage capacity.

  6. Flow battery - Wikipedia

    en.wikipedia.org/wiki/Flow_battery

    A typical flow battery consists of two tanks of liquids which are pumped past a membrane held between two electrodes. [1]A flow battery, or redox flow battery (after reduction–oxidation), is a type of electrochemical cell where chemical energy is provided by two chemical components dissolved in liquids that are pumped through the system on separate sides of a membrane.

  7. White-box testing - Wikipedia

    en.wikipedia.org/wiki/White-box_testing

    The programmer must have a deep understanding of the application to know what kinds of test cases to create so that every visible path is exercised for testing. Once the source code is understood then it can be analyzed for test cases to be created. The following are the three basic steps that white-box testing takes in order to create test cases:

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