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  2. Piston (optics) - Wikipedia

    en.wikipedia.org/wiki/Piston_(optics)

    Piston and tilt are not actually true optical aberrations, as they do not represent or model curvature in the wavefront. Defocus is the lowest order true optical aberration. If piston and tilt are subtracted from an otherwise perfect wavefront, a perfect, aberration-free image is formed.

  3. Tilt (optics) - Wikipedia

    en.wikipedia.org/wiki/Tilt_(optics)

    Piston and tilt are not actually true optical aberrations, as they do not represent or model curvature in the wavefront. Defocus is the lowest order true optical aberration. If piston and tilt are subtracted from an otherwise perfect wavefront, a perfect, aberration-free image is formed. Rapid optical tilts in both X and Y directions are termed ...

  4. Kit car - Wikipedia

    en.wikipedia.org/wiki/Kit_car

    A kit car must pass its MOT test and have a valid car tax, or have a valid Statutory Off-Road Notification (SORN) declaration. As part of the IVA, a kit car can sometimes be permitted to assume the age of a single, older car (the donor car) if the major parts were taken from it in its construction. [8]

  5. Shift kit - Wikipedia

    en.wikipedia.org/wiki/Shift_kit

    For manual transmission equipped cars, it is a component that replaces the stock gear selector (shifter). A shift kit usually shortens the throws of selecting a gear (also known as a short throw shift or short shifter), therefore allowing a driver to reduce the shift time and change gears more efficiently.

  6. Overhead camshaft engine - Wikipedia

    en.wikipedia.org/wiki/Overhead_camshaft_engine

    SOHC design (for a 1973 Triumph Dolomite Sprint) . The oldest configuration of overhead camshaft engine is the single overhead camshaft (SOHC) design. [1] A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft and a V engine or flat engine has a total of two camshafts (one for each cylinder bank).

  7. Variable displacement pump - Wikipedia

    en.wikipedia.org/wiki/Variable_displacement_pump

    A common type of variable-displacement pump used in vehicle technology is the axial piston pump. This pump has several pistons in cylinders arranged parallel to each other and rotating around a central shaft. A swashplate at one end is connected to the pistons. As the pistons rotate, the angle of the plate causes them to move in and out of ...

  8. Optical parametric oscillator - Wikipedia

    en.wikipedia.org/wiki/Optical_parametric_oscillator

    An optical parametric oscillator (OPO) is a parametric oscillator that oscillates at optical frequencies. It converts an input laser wave (called "pump") with frequency ω p {\displaystyle \omega _{p}} into two output waves of lower frequency ( ω s , ω i {\displaystyle \omega _{s},\omega _{i}} ) by means of second- order nonlinear optical ...

  9. Sterling Sports Cars - Wikipedia

    en.wikipedia.org/wiki/Sterling_Sports_Cars

    The "component cars" and parts manufactured by Sterling Sports Cars LLC. were sold as components. The cars were not pre-assembled by Sterling Sports Cars but were intended to be assembled by the purchaser or by a third-party. The Sterling was originally designed to be fitted to a VW Beetle floor pan.