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  2. Artificial intelligence - Wikipedia

    en.wikipedia.org/wiki/Artificial_intelligence

    Artificial intelligence (AI), in its broadest sense, is intelligence exhibited by machines, particularly computer systems.It is a field of research in computer science that develops and studies methods and software that enable machines to perceive their environment and use learning and intelligence to take actions that maximize their chances of achieving defined goals. [1]

  3. List of most-disliked YouTube videos - Wikipedia

    en.wikipedia.org/wiki/List_of_most-disliked...

    As of July 9, 2021, YouTube Rewind 2018 has over 7.1 million more dislikes than Justin Bieber's Baby. In March 2011, "Baby", which then had 1.17 million dislikes, was surpassed by the video for Rebecca Black 's "Friday", yielding more than 1.2 million dislikes. [6] ". Friday" amassed over three million dislikes before the video was taken down ...

  4. Magnetohydrodynamic generator - Wikipedia

    en.wikipedia.org/wiki/Magnetohydrodynamic_generator

    A magnetohydrodynamic generator (MHD generator) is a magnetohydrodynamic converter that transforms thermal energy and kinetic energy directly into electricity. An MHD generator, like a conventional generator, relies on moving a conductor through a magnetic field to generate electric current. The MHD generator uses hot conductive ionized gas (a ...

  5. 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 ...

  6. Arizona - Wikipedia

    en.wikipedia.org/wiki/Arizona

    Arizona is the sixth largest state by area, ranked after New Mexico and before Nevada. Of the state's 113,998 square miles (295,000 km 2), approximately 15% is privately owned. The remaining area is public forest and parkland, state trust land and Native American reservations.

  7. James Webb Space Telescope - Wikipedia

    en.wikipedia.org/wiki/James_Webb_Space_Telescope

    Nancy Grace Roman Space Telescope →. The James Webb Space Telescope (JWST) is a space telescope designed to conduct infrared astronomy. As the largest telescope in space, it is equipped with high-resolution and high-sensitivity instruments, allowing it to view objects too old, distant, or faint for the Hubble Space Telescope. [9]

  8. Scientific consensus on climate change - Wikipedia

    en.wikipedia.org/wiki/Scientific_consensus_on...

    The 5th International Survey of Climate Scientists by Dennis Bray and Hans von Storch took place over December 2015 and January 2016. Unlike the past surveys, the scientists were no longer questioned on their opinion of the IPCC, and there was much more focus on extreme event attribution. In other ways, it had replicated the methodology of the ...

  9. Three Mile Island accident - Wikipedia

    en.wikipedia.org/wiki/Three_Mile_Island_accident

    According to a survey conducted in April 1979, 98% of the evacuees had returned to their homes within three weeks. [ 101 ] Post-TMI surveys have shown that less than 50% of the American public were satisfied with the way the accident was handled by Pennsylvania state officials and the NRC, and people surveyed were even less pleased with the ...

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