| Colorimetry: CIE Color Matching |
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| • | Match a pure spectral test field |
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| w(l) with a reference field: a |
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| mixture of red z(700), green |
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| y(546.1) and blue x(435.8) of |
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| variable intensity |
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| T + C = A +
B |
| T = A + B +
C |
