filter

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Related to red filter: light filter

filter

noun classification, means to rectify, means to reeine, purification, purifier, refinery, screen, sieve, sifter, strainer

filter

verb clarify, clean, clear, distill, filtrate, find, leach, pass through, percolate, purify, rectify, refine, screen, strain
Associated concepts: filter the evidence through the jury
See also: distill, purge, screen, select
References in periodicals archive ?
Because the event will be held outside please bring warm clothing and if you do bring a torch, please cover it with a red filter (a simple skimmed milk red lid works very well apparently).
At a first look, the view of the Wirral shore, entitled Just a Buoy, from Michael Checkland, looks as if it could have been the product of an orange or red filter, although the lighter shade of the sky nearer the horizon gives the use of the graded effect away.
Take a flashlight just in case - and bring along a red filter or a red piece of cellophane to put over the flashlight at the observatory.
Amber and red filter out blue, for example, which makes it easier to see a football or cricket ball against a blue sky.
I love the contrast and level of detail available, and frequently use a red filter to bring out strong skies," he adds.
It has five LEDs with three brightness settings and comes with a camo band and red filter that pivots into place over the bulbs.
SureFire suggests the red filter is useful for travelling to a stand in the dark without alarming game, while the blue filter shows up a blood trail if wounded game is being followed after dark.