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Here is a method besed on CIE1931 system: hX.cdt_?
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1) Try to find the intersection point of CIE1931 standrad curve and the following line: \p4*Q}t
y=k*(x-0.3333) + 0.3333 h`&TDB2
here &FXf]9
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k=(yo-0.3333)/(xo-0.3333) and (xo,yo) is the known color coordintae point. T3wTMbZ!VK
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2) the wavelength of the intersection point will be the dominant wave to be determined. ~7:q+\
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If you need further help, I can share an Excel file. 7{#p'.nc5
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Let me know how thing's going. y\FQt];z)
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Hope helpful. REh"/d
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Mang