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Here is a method besed on CIE1931 system: g`Md80*Zfk
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1) Try to find the intersection point of CIE1931 standrad curve and the following line: %$X\"
y=k*(x-0.3333) + 0.3333 ^X?D#\
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k=(yo-0.3333)/(xo-0.3333) and (xo,yo) is the known color coordintae point. ;iX<`re~
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2) the wavelength of the intersection point will be the dominant wave to be determined. mb1IQ &
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If you need further help, I can share an Excel file. /6tcSg)
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Let me know how thing's going. >;lKLGJrd>
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Hope helpful. 9M2f!kJP$
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Mang