Explain what specular and diffuse reflections are in the real world

Explain why display devices appear to be able to reproduce (almost) all the colours of the spectrum using only red, green, and blue light.

Describe an algorithm (other than thresholding) that will convert a greyscale image (8 bits per pixel) to a bi-level black and white image (1 bit per pixel), with the same number of pixels, while retaining as much detail as possible.

Explain what specular and diffuse reflections are in the real world. State and explain equations for calculating approximations to both in a computer