anomaloscope

A 1910 photograph of w:Willibald NagelWillibald A. Nagel (1870–1911), a German physiologist who announced his invention of the anomaloscope in 1898 (though it was then given a different name)

Meaning

Noun

An instrument used to test for color blindness by measuring quantitative and qualitative anomalies in color perception.

Origin

From German Anomaloskop, from Ancient Greek ἀνώμαλος ("irregular, uneven") (from Ancient Greek ᾰ̓- ("[[a-#Etymology 5") + ὁμᾰλός) + σκοπέω (from Proto-Indo-European *sḱop, ultimately from *speḱ-).

Modern English dictionary

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