Christiansen filter


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Christiansen filter

[′kris·chən·sən ′fil·tər]
(optics)
A type of color filter, a solid-in-liquid suspension, which scatters all incident energy except that of a narrow frequency range out of the direct beam. Also known as band-pass filter.
References in periodicals archive ?
There are many techniques such as Christiansen filter, gravity refractometer, mirror reflection, prism reflection, pendellosung oscillation etc.

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