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Light trap

any mechanical arrangement that allows some form of movement to take place while excluding light, such as a light-proof door or the lips of a film cassette


Read Also:

  • Light treatment

    light treatment n. See phototherapy.

  • Light-valve

    noun, Electricity. 1. a light-transmitting device having transmissions that vary in accordance with an electric input, as voltage, current, or an electron beam, used chiefly for recording sound on motion-picture film.

  • Light-verse

    noun 1. verse that is written to entertain, amuse, or please, often by the subtlety of its form rather than by its literary quality.

  • Light-water

    noun 1. ordinary water, as opposed to heavy water; water containing the normal proportion of deuterium oxide. noun 1. a name for water (H2O), as distinct from heavy water light water Ordinary water, H2O. Compare heavy water.

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