anomaloscope
(redirected from Pickford-Nicholson anomaloscope)

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anomaloscope [ə′näm·ə·lə‚skōp]

(optics)

An optical instrument for testing color vision, in which a yellow light whose intensity may be varied is matched against red and green lights whose intensity is fixed.

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anomaloscope (redirected from Pickford-Nicholson anomaloscope)

anomaloscope
(redirected from Pickford-Nicholson anomaloscope)