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  2. Common-mode rejection ratio - Wikipedia

    en.wikipedia.org/wiki/Common-mode_rejection_ratio

    Common-mode rejection ratio. In electronics, the common mode rejection ratio ( CMRR) of a differential amplifier (or other device) is a metric used to quantify the ability of the device to reject common-mode signals, i.e. those that appear simultaneously and in-phase on both inputs. An ideal differential amplifier would have infinite CMRR ...

  3. Union Pacific 9000 Class - Wikipedia

    en.wikipedia.org/wiki/Union_Pacific_9000_Class

    The Union Pacific 9000 class was the only class of steam locomotives with a 4-12-2 wheel arrangement ever to be built. Under the Whyte notation for the classification of steam locomotives, the locomotives had four leading wheels, twelve coupled driving wheels, and two trailing wheels. As the Union Pacific was the only operator of this wheel ...

  4. Differential (mechanical device) - Wikipedia

    en.wikipedia.org/wiki/Differential_(mechanical...

    Differential (mechanical device) A differential is a gear train with three drive shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others. A common use of differentials is in motor vehicles, to allow the wheels at each end of a drive axle to rotate at different speeds while cornering.

  5. Linear differential equation - Wikipedia

    en.wikipedia.org/wiki/Linear_differential_equation

    In mathematics, a linear differential equation is a differential equation that is defined by a linear polynomial in the unknown function and its derivatives, that is an equation of the form + ′ + ″ + () = where a 0 (x), ..., a n (x) and b(x) are arbitrary differentiable functions that do not need to be linear, and y′, ..., y (n) are the successive derivatives of an unknown function y of ...

  6. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  7. Baby Raccoons Trying to Play with Ball at Miller Zoo Are ...

    www.aol.com/baby-raccoons-trying-play-ball...

    Located in Quebec, Canada, The Miller Zoo is a wildlife sanctuary and rehabilitation center and home to a variety of animals. They post a lot of adorable videos of their residents, but the one ...

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