leucoscope definition

  • noun:
    • An instrument for testing along with perception for the eye, or for contrasting different lights regarding their constituent color or relative whiteness.
    • a musical instrument, developed by Professor Helmholtz, for testing the colour perception of the attention, and for contrasting different lights, regarding their particular constituent colors or their particular general whiteness.
    • An optical instrument for testing the eyes for color-blindness, created by Helmholtz.
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