Technical interpretations of light and color. In reference to light as color, you should already understand that color is only perceived by the observer. And some people will perceive colors slightly different depending on the amount of blue or green cones in their genome. This is the result of your genes or genetics, and no one person will perceive one color the same as another. If you are interested in a little experimental fun, you can get a selection of different materials with different colors and see how you and your friends explain the colors. Most people will have a different physiological reaction and psychological response to the light intensity based on their material and therefore the perceived color upon that material.
This is the essence of color variability or the observers position to the object. As we've already discussed, it is really not accurate to refer to light as being colored. Light is simply a specific wavelength, or a mixture of wavelengths and has no color in itself. An object that is emitting or reflecting light to our eye appears to have a specific color as the result of the chemical response to the wavelength in our brain. So to be technically appropriate when describing a color, refer to the object as its reflectance of the yellow light, or reflectance of blue or green light, because a white object might actually be reflecting two different wavelengths of light to appear yellow or more yellow than otherwise would be. To find out more on this and to get a more detailed description of licenses On, check out my course.