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  2. Kerrison Predictor - Wikipedia

    en.wikipedia.org/wiki/Kerrison_Predictor

    Instead, it made a relatively simple calculation of the impact point based on relative motion as provided by the operator. Key to the concept was the use of two ball-and-disk integrators, used in this case to maintain a constant rate of motion. On top of the motorized disk were two metal balls, set one on top of the other with the bottom one in ...

  3. Fourth, fifth, and sixth derivatives of position - Wikipedia

    en.wikipedia.org/wiki/Fourth,_fifth,_and_sixth...

    Snap, [6] or jounce, [2] is the fourth derivative of the position vector with respect to time, or the rate of change of the jerk with respect to time. [4] Equivalently, it is the second derivative of acceleration or the third derivative of velocity, and is defined by any of the following equivalent expressions: = ȷ = = =.

  4. Three-body problem - Wikipedia

    en.wikipedia.org/wiki/Three-body_problem

    From the end of the 19th century to early 20th century, the approach to solve the three-body problem with the usage of short-range attractive two-body forces was developed by scientists, which offered P. F. Bedaque, H.-W. Hammer and U. van Kolck an idea to renormalize the short-range three-body problem, providing scientists a rare example of a ...

  5. Neo-Riemannian theory - Wikipedia

    en.wikipedia.org/wiki/Neo-Riemannian_theory

    In a Major Triad move the third down a semitone (C major to C minor), in a Minor Triad move the third up a semitone (C minor to C major) The R transformation exchanges a triad for its Relative. In a Major Triad move the fifth up a tone (C major to A minor), in a Minor Triad move the root down a tone (A minor to C major)

  6. Range of a projectile - Wikipedia

    en.wikipedia.org/wiki/Range_of_a_projectile

    The path of this projectile launched from a height y 0 has a range d. In physics, a projectile launched with specific initial conditions will have a range. It may be more predictable assuming a flat Earth with a uniform gravity field, and no air resistance. The horizontal ranges of a projectile are equal for two complementary angles of ...

  7. Range of motion - Wikipedia

    en.wikipedia.org/wiki/Range_of_motion

    Range of motion (or ROM) is the linear or angular distance that a moving object may normally travel while properly attached to another. In biomechanics and strength training , ROM refers to the angular distance and direction a joint can move between the flexed position and the extended position. [ 1 ]

  8. File:Third-order motion profile.svg - Wikipedia

    en.wikipedia.org/wiki/File:Third-order_motion...

    Following the fastest possible motion within an allowed maximum value for speed, acceleration, and jerk, will result in a third-order motion profile as illustrated in this image: The motion profile consists of up to 7 segments defined by the following: acceleration build-up, with maximum positive jerk; constant acceleration (zero jerk)

  9. Euler's three-body problem - Wikipedia

    en.wikipedia.org/wiki/Euler's_three-body_problem

    The problem of two fixed centers conserves energy; in other words, the total energy is a constant of motion.The potential energy is given by =where represents the particle's position, and and are the distances between the particle and the centers of force; and are constants that measure the strength of the first and second forces, respectively.