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  2. Tidal stream generator - Wikipedia

    en.wikipedia.org/wiki/Tidal_stream_generator

    Tidal stream generator. Two types of Tidal Stream Generators Evopod - A semi-submerged floating approach tested in Strangford Lough with SeaGen in the background. A tidal stream generator, often referred to as a tidal energy converter ( TEC ), is a machine that extracts energy from moving masses of water, in particular tides, although the term ...

  3. Barcode - Wikipedia

    en.wikipedia.org/wiki/Barcode

    Barcode. A UPC-A barcode. A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called ...

  4. List of countries by GDP (PPP) per capita - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_GDP...

    A country's gross domestic product (GDP) at purchasing power parity (PPP) per capita is the PPP value of all final goods and services produced within an economy in a given year, divided by the average (or mid-year) population for the same year. This is similar to nominal GDP per capita but adjusted for the cost of living in each country.

  5. List of United States cities by population - Wikipedia

    en.wikipedia.org/wiki/List_of_United_States...

    50 states and Washington, D.C. This table lists the 336 incorporated places in the United States, excluding the U.S. territories, with a population of at least 100,000 as of July 1, 2023, as estimated by the U.S. Census Bureau. Five states have no cities with populations exceeding 100,000. They are: Delaware, Maine, Vermont, West Virginia, and ...

  6. Droop speed control - Wikipedia

    en.wikipedia.org/wiki/Droop_speed_control

    Droop speed control is a control mode used for AC electrical power generators, whereby the power output of a generator reduces as the line frequency increases. It is commonly used as the speed control mode of the governor of a prime mover driving a synchronous generator connected to an electrical grid. It works by controlling the rate of power ...

  7. Herbert Hoover - Wikipedia

    en.wikipedia.org/wiki/Herbert_Hoover

    Herbert Clark Hoover (August 10, 1874 – October 20, 1964) was an American politician and humanitarian who served as the 31st president of the United States from 1929 to 1933. A member of the Republican Party, he held office during the onset of the Great Depression. A wealthy mining engineer before his presidency, Hoover led the wartime ...

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