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  2. Time formatting and storage bugs - Wikipedia

    en.wikipedia.org/wiki/Time_formatting_and...

    This problem can be seen in the spreadsheet program Microsoft Excel as of 2023, which stores dates as the number of days since 31 December 1899 (day 1 is 1 January 1900) with a fictional leap day in 1900 if using the default 1900 date system. Alternatively, if using the 1904 date system, the date is stored as the number of days since 1 January ...

  3. Leap year problem - Wikipedia

    en.wikipedia.org/wiki/Leap_year_problem

    The leap year problem (also known as the leap year bug or the leap day bug) is a problem for both digital (computer-related) and non-digital documentation and data storage situations which results from errors in the calculation of which years are leap years, or from manipulating dates without regard to the difference between leap years and common years.

  4. List of equations in classical mechanics - Wikipedia

    en.wikipedia.org/wiki/List_of_equations_in...

    Classical mechanics is the branch of physics used to describe the motion of macroscopic objects. [1] It is the most familiar of the theories of physics. The concepts it covers, such as mass, acceleration, and force, are commonly used and known. [2]

  5. Boolean satisfiability problem - Wikipedia

    en.wikipedia.org/wiki/Boolean_satisfiability_problem

    SAT itself (tacitly) uses only ∃ quantifiers. If only ∀ quantifiers are allowed instead, the so-called tautology problem is obtained, which is co-NP-complete. If any number of both quantifiers are allowed, the problem is called the quantified Boolean formula problem (QBF), which can be shown to be PSPACE-complete. It is widely believed that ...

  6. Rosie Ruiz - Wikipedia

    en.wikipedia.org/wiki/Rosie_Ruiz

    Rosie M. Vivas [1] (née Ruiz; June 21, 1953 – July 8, 2019) [2] was a Cuban fraudster who, among other schemes, was declared the winner in the female category for the 84th Boston Marathon in 1980, only to have her title stripped eight days after the race when it was discovered that she had not run the entire course.

  7. Power Pad - Wikipedia

    en.wikipedia.org/wiki/Power_Pad

    The Power Pad, Side A The Power Pad, Side B. The Power Pad (known in Japan as Family Trainer, and in Europe and briefly in the United States as Family Fun Fitness) is a floor mat game controller for the Nintendo Entertainment System. It is a gray mat with twelve pressure-sensors embedded between two layers of flexible plastic.

  8. Sudden unintended acceleration - Wikipedia

    en.wikipedia.org/wiki/Sudden_unintended_acceleration

    Other problems may be implicated in the case of older vehicles equipped with carburetors. Weak, disconnected, or mis-connected throttle return springs, worn shot-pump barrels, chafed bowden cable housings, and cables which jump their tracks in the throttle-body crank can all cause similar acceleration problems.

  9. Peter Riegel - Wikipedia

    en.wikipedia.org/wiki/Peter_Riegel

    Peter Riegel (January 30, 1935 – May 28, 2018) was an American research engineer who developed a mathematical formula for predicting race times for runners and other athletes given a certain performance at another distance. The formula has been widely adopted on account of its simplicity and predictive accuracy.