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  2. Activant - Wikipedia

    en.wikipedia.org/wiki/Activant

    In 1980, Francisco Ramiro Diaz, Activant's founder, observed that the hardlines market had similar inventory management and accounts receivable requirements as jobbers and warehouse distributors. To cater to the hardware retailers, the company created a point-of-sale (POS) cash terminal system. [8]

  3. Point of sale - Wikipedia

    en.wikipedia.org/wiki/Point_of_sale

    The point of sale (POS) or point of purchase (POP) is the time and place at which a retail transaction is completed.At the point of sale, the merchant calculates the amount owed by the customer, indicates that amount, may prepare an invoice for the customer (which may be a cash register printout), and indicates the options for the customer to make payment.

  4. Wedge prism - Wikipedia

    en.wikipedia.org/wiki/Wedge_prism

    Wedge prism. The wedge prism is a prism with a shallow angle between its input and output surfaces. This angle is usually 3 degrees or less. Refraction at the surfaces causes the prism to deflect light by a fixed angle. When viewing a scene through such a prism, objects will appear to be offset by an amount that varies with their distance from ...

  5. Telescopic sight - Wikipedia

    en.wikipedia.org/wiki/Telescopic_sight

    A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. [1] It is equipped with some form of a referencing pattern – known as a reticle – mounted in a focally appropriate position in its optical system to provide an accurate point of aim.

  6. Polarimeter - Wikipedia

    en.wikipedia.org/wiki/Polarimeter

    Construction: The polarimeter consists of a monochromatic source S which is placed at focal point of a convex lens L. Just after the convex lens there is a Nicol Prism P which acts as a polariser. H is a half shade device which divides the field of polarized light emerging out of the Nicol P into two halves, generally of unequal brightness.

  7. Minimum deviation - Wikipedia

    en.wikipedia.org/wiki/Minimum_deviation

    In a prism, the angle of deviation (δ) decreases with increase in the angle of incidence (i) up to a particular angle.This angle of incidence where the angle of deviation in a prism is minimum is called the minimum deviation position of the prism and that very deviation angle is known as the minimum angle of deviation (denoted by δ min, D λ, or D m).

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