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  2. Multiplicative inverse - Wikipedia

    en.wikipedia.org/wiki/Multiplicative_inverse

    The reciprocal function: y = 1/x.For every x except 0, y represents its multiplicative inverse. The graph forms a rectangular hyperbola.. In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x −1, is a number which when multiplied by x yields the multiplicative identity, 1.

  3. Reciprocating motion - Wikipedia

    en.wikipedia.org/wiki/Reciprocating_motion

    Reciprocating motion, also called reciprocation, is a repetitive up-and-down or back-and-forth linear motion. It is found in a wide range of mechanisms, including reciprocating engines and pumps . The two opposite motions that comprise a single reciprocation cycle are called strokes .

  4. Inverse trigonometric functions - Wikipedia

    en.wikipedia.org/wiki/Inverse_trigonometric...

    [1] [10] Another precarious convention used by a small number of authors is to use an uppercase first letter, along with a “ −1 ” superscript: Sin −1 (x), Cos −1 (x), Tan −1 (x), etc. [11] Although it is intended to avoid confusion with the reciprocal, which should be represented by sin −1 (x), cos −1 (x), etc., or, better, by ...

  5. Engine balance - Wikipedia

    en.wikipedia.org/wiki/Engine_balance

    A reciprocating imbalance is caused when the linear motion of a component (such as a piston) is not cancelled out by another component moving with equal momentum, but opposite in direction on the same plane. Types of reciprocating phase imbalance are: Mismatch in counter-moving pistons, such as in a single-cylinder engine or an inline-three engine.

  6. Reciprocating engine - Wikipedia

    en.wikipedia.org/wiki/Reciprocating_engine

    A reciprocating engine, more often known as a piston engine, ... Cylinders may be aligned in line, in a V configuration, horizontally opposite each other, ...

  7. Scallop theorem - Wikipedia

    en.wikipedia.org/wiki/Scallop_theorem

    In physics, the scallop theorem states that a swimmer that performs a reciprocal motion cannot achieve net displacement in a low-Reynolds number Newtonian fluid environment, i.e. a fluid that is highly viscous. Such a swimmer deforms its body into a particular shape through a sequence of motions and then reverts to the original shape by going ...

  8. Reciprocal - Wikipedia

    en.wikipedia.org/wiki/Reciprocal

    Reciprocal aircraft heading, 180 degrees (the opposite direction) from a stated heading; Reciprocal lattice, a basis for the dual space of covectors, in crystallography; Reciprocal length, a measurement used in science; Reciprocating engine or piston engine; Reciprocating oscillation in physical wave theory

  9. Permeance - Wikipedia

    en.wikipedia.org/wiki/Permeance

    In electromagnetism, permeance is the inverse of reluctance.In a magnetic circuit, permeance is a measure of the quantity of magnetic flux for a number of current-turns. A magnetic circuit almost acts as though the flux is conducted, therefore permeance is larger for large cross-sections of a material and smaller for smaller cross section lengths.