red filter
collocation in Englishmeaningsofredandfilter
These words are often used together. Click on the links below to explore the meanings. Or,see other collocations withfilter.
red
adjective
uk/red/us/red/
of the colour of ...
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filter
noun[C]
uk/ˈfɪl.tər/us/ˈfɪl.tɚ/
any of several types of equipment or devices for removing solids from liquids or gases, or for removing particular types ...
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(Definition ofredandfilterfrom theCambridge English Dictionary© Cambridge University Press)
Examplesofred filter
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
In the case of the three filters investigated in the present study, it seems clear that condition 1 is not met by aredfilter.
From theCambridge English Corpus
A blue filter, on the other hand, would have a marked effect which is opposite to that of theredfilter.
From theCambridge English Corpus
It is found that aredfilterhas a large effect on the long- and middle-wavelength cone pigments and on the red-green color-opponent mechanisms.
From theCambridge English Corpus
These authors found that introducing aredfiltercaused a decrease in one measure of reading per formance.
From theCambridge English Corpus
The effect is most readily obtained with aredfilter.
From theCambridge English Corpus
A blue filter has a fairly pronounced effect but this effect is distinctly different from that of theredfilter.
From theCambridge English Corpus
Thus, theredfilterwould be expected to have a larger suppressive effect than either the blue or the green filter.
From theCambridge English Corpus
The white increment thresholds are shown by the solid bars and the same increment with a #25redfilterby the open bars.
From theCambridge English Corpus
If we focus on the red-green mechanisms, we see that both of these are substantially affected by aredfilter.
From theCambridge English Corpus
The sole illuminant consisted of indirect light from a torch fitted with aredfilter(cutoff, 650 nm).
From theCambridge English Corpus
The top stop light is a red light source but it consists of aredfilterin front of a more or less white light source.
From theCambridge English Corpus
They get a very strong light with aredfilterand drive on to the moors to look for deer.
From the
Hansard archive
Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0
One photo is projected using cyan/blue filter and the other photo is projected with aredfilter.
From
Wikipedia
A red area will appear brighter when viewed through aredfilterand darker when seen through a blue filter.
From
Wikipedia
Choosing to look through theredfilterintensified the images of the ghosts, while the blue filter removed them.
From
Wikipedia
The intensity of the color can be tested with a colorimeter, using aredfilterto discern the concentration of starch present in the solution.
From
Wikipedia
Some disappearing-filament pyrometer use aredfilterto reduce light from the environment (hot objects glow red).
From
Wikipedia
Many heat lamps include aredfilterto minimize the amount of visible light emitted.
From
Wikipedia
Theredfilteradmits only red, while the cyan filter blocks red, passing blue and green (the combination of blue and green is perceived as cyan).
From
Wikipedia
The frames exposed behind the green filter were printed on one strip of black-and-white film, and the frames exposed behind theredfilterwere printed on another strip.
From
Wikipedia
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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Go to the definition ofred
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