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.
Eye Glasses (Spectacles). Like much of the history of optics, there are many reports about spectacles, but most put the invention around 1285. 1  The grave of Salvano d'Aramento degli Amati a nobleman of Florence has a statement that he invented spectacles, but kept the process a secret.