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monochromatic light of wavelength 589 nm
monochromatic light of wavelength 480 nm
monochromatic light of wavelength 600 nm
monochromatic light of wavelength 667 nm
a monochromatic light of wavelength 500 nm
monochromatic light of wavelength
light of wavelength 590 nm
light of wavelength 488 nm
monochromatic light of wavelength 667
monochromatic green light of wavelength 5
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