comparator

[ kuhm-par-uh-ter, kom-puh-rey- ]

Phonetic (Standard)IPA

noun

any of various instruments for making comparisons, as of lengths or distances, tints of colors, etc.
Electronics. a circuit for comparing two signals, as readings of duplicate information stored in a digital computer, and for giving an indication of agreement or disagreement between them.

comparator

/ kəmˈpærətə /

any instrument used to measure a property of a system by comparing it with a standard system
an electric circuit that compares two signals and gives an indication of the extent of their dissimilarity

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First recorded in 1880–85; from Late Latin comparātor “a comparer”; compare, -tor

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The most important of these “tricks” is the use of a “standard” or “comparator”.

The lieutenant put the retinal photos in the comparator, took a good look, and nodded.

Put the sample and comparator together into a reactor and bombard them with neutrons.

In the comparator Vickers brought the corresponding standard comparison lines together.

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