Physicochemical and physiological basis of dichromatic colour

@article{Kreft2007PhysicochemicalAP,
  title={Physicochemical and physiological basis of dichromatic colour},
  author={Samo Kreft and Marko Kreft},
  journal={Naturwissenschaften},
  year={2007},
  volume={94},
  pages={935-939}
}
Out of three perceptual characteristics of the colour of any substance, the hue depends mostly on the spectral properties of a substance, while the brightness and saturation depend also on the concentration of a substance and its thickness. Here, we report that evident change of the hue of the colour (i.e., from green to red) is due to a change in concentration or the thickness of a layer in some exceptional substances such as pumpkin seed oil or an aqueous solution of bromophenol blue. In some… 

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