Hue Discrimination
The term hue discrimination is used to describe the change in wavelength that must be obtained in order for the eye to detect a shift in hue. An equation (l + delta l) defines the required wavelength adjustment that must take place. A less than two nanometer change in wavelength causes most spectral colors to appear to take on a different hue. However, for blue light and red light, a much larger wavelength shift must occur in order for a person to be able to identify a difference in hue.
Read more about this topic: Abney Effect
Famous quotes containing the word hue:
“Even when seen from near, the olive shows
A hue of far away. Perhaps for this
The dove brought olive back, a tree which grows
Unearthly pale, which ever dims and dries,
And whose great thirst, exceeding all excess,
Teaches the South it is not paradise.”
—Richard Wilbur (b. 1921)