Rami Arieli: "The Laser Adventure" Chapter 9.3.4 page 4
Response Function of the Human Eye
Figure 9.6 shows the response function of the human eye to different regions of the visible spectrum.
The eye is most sensitive to the yellow light, and the sensitivity of the eye dropped toward both sides of the visible spectrum: the red and the violet.
Figure 9.6: The response function of the human eye
to different regions of the visible spectrum.