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.
Evidence points to the first compound microscope appearing in the Netherlands in the late 1590s, probably an invention of eyeglass makers there, Hans Lippershey (who developed an early telescope) and Zacharias Janssen (also claimed as the inventor of the telescope).