Based on the relative luminosity curve shown in the figure, determine the relative luminosity of wavelength 580 nm .

Step-by-step solution

The relative luminosity curve (or photopic luminosity function) represents the average spectral sensitivity of human visual perception of brightness. It peaks at a wavelength of 555 nm , where the relative luminosity is defined as 1.0 . For other wavelengths, the relative luminosity is a fraction of this peak value, which can be directly read from the standard relative luminosity curve provided in the figure. By locating the wavelength = 580 nm on the x-axis and tracing it to the curve, the corresponding value on t