Christiansen filter

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English[edit]

Etymology[edit]

Named after Danish physicist Christian Christiansen.

Noun[edit]

Christiansen filter (plural Christiansen filters)

  1. (optics, uncommon) A narrow bandpass or monochromatic optical filter which consists of an optical cell which is filled with a crushed substance (e.g. glass) and a (mostly organic) liquid.

Further reading[edit]

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