Social Worker Certificate Program Information. Social worker certificate programs, which may be offered at the bachelor's or graduate level, cover human behavior, social environments and laws, communication techniques, social welfare policy and more.
Explanation of Color From a Prism. Although no one knows who invented the prism, Sir Isaac Newton was the one who discovered that the rainbows they produced were merely the components of white light that had been separated. Usually just called light or âvisible light,â white light comes from the sun.
Even before Newtons famous experiments (1665) with light people were using prisms to experiment with colour, and thought that somehow the prism colored the light. Newton obtained a prism, and set up his so that a spot of sunlight fell onto it.