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  2. Groundhog Day (film) - Wikipedia

    en.wikipedia.org/wiki/Groundhog_Day_(film)

    Groundhog Day is a 1993 American fantasy comedy film directed by Harold Ramis from a screenplay by him and Danny Rubin.Starring Bill Murray, Andie MacDowell, and Chris Elliott, it tells the story of a cynical television weatherman covering the annual Groundhog Day event in Punxsutawney, Pennsylvania, who becomes trapped in a time loop, forcing him to relive February 2 repeatedly.

  3. Radio - Wikipedia

    en.wikipedia.org/wiki/Radio

    The word radio is derived from the Latin word radius, meaning "spoke of a wheel, beam of light, ray".It was first applied to communications in 1881 when, at the suggestion of French scientist Ernest Mercadier [], Alexander Graham Bell adopted radiophone (meaning "radiated sound") as an alternate name for his photophone optical transmission system.

  4. Brain–computer interface - Wikipedia

    en.wikipedia.org/wiki/Brain–computer_interface

    In 1990, a report was given on a closed loop, bidirectional, adaptive BCI controlling a computer buzzer by an anticipatory brain potential, the Contingent Negative Variation (CNV) potential. [ 19 ] [ 20 ] The experiment described how an expectation state of the brain, manifested by CNV, used a feedback loop to control the S2 buzzer in the S1-S2 ...

  5. Hard disk drive - Wikipedia

    en.wikipedia.org/wiki/Hard_disk_drive

    Typical hard disk drives attempt to "remap" the data in a physical sector that is failing to a spare physical sector provided by the drive's "spare sector pool" (also called "reserve pool"), [68] while relying on the ECC to recover stored data while the number of errors in a bad sector is still low enough.

  6. Violin - Wikipedia

    en.wikipedia.org/wiki/Violin

    The tailpiece anchors the strings to the lower bout of the violin by means of the tailgut, which loops around an ebony button called the tailpin (sometimes confusingly called the endpin, like the cello's spike), which fits into a tapered hole in the bottom block. The E string will often have a fine tuning lever worked by a small screw turned by ...

  7. Fighter aircraft - Wikipedia

    en.wikipedia.org/wiki/Fighter_aircraft

    In the English-speaking world, "F" is often now used to indicate a fighter (e.g. Lockheed Martin F-35 Lightning II or Supermarine Spitfire F.22), though "P" used to be used in the US for pursuit (e.g. Curtiss P-40 Warhawk), a translation of the French "C" (Dewoitine D.520 C.1) for Chasseur while in Russia "I" was used for Istrebitel, or ...