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.
The modern style of eyeglasses frame, which could be placed over the ears and nose, was invented in 1727 by British optician Edward Scarlett. American scientist and philosopher Benjamin Franklin is credited with the invention of bifocals, dividing his lenses for distant and near vision.