A prism of glass disperses the light into its component of seven colors after refraction.
Refraction is a phenomenon of change of speed of light after there is change in the medium of the propagating light wave. The speed of light waves slow down after it passes through a relatively optically denser medium and vice versa.
When the light incidents on the surface of an optically denser medium at any angle other than 0 degrees to normal of the surface then it shows a deviation in its initial path and bends towards the normal in the denser medium and vice-versa.
The light on being refracted through a prism shows dispersion of light into 7 colors as shown in figure.
Red light having the highest wavelength among all visible colors and least bent, while the violet light has the smallest wavelength and maximum bend.
ANSWER: Africans associate this type of surface with: Cultivated refinement. The nature of African art grows from the theme of religious symbolism, functionalism, utilitarianism. African Art reflects images of ancestral spirits and pantheons of gods and goddess.
White space can add to or detract from the balance, unity, harmony, rhythm and overall success of a design. White space can give emphasis, contrast, and movement