Later the ancient Egyptians wore copper jewelry as a status symbol and to ward off evil spirits. Now Tiffany & Co. is trumpeting that, in honor of its 175th anniversary, modern-day alchemists have made a new precious metal to adorn the wrists, fingers and necks of its wealthy clientele.
Wilhelm Wundt opens first experimental laboratory in psychology at the University of Leipzig, Germany. Credited with establishing psychology as an academic discipline, Wundt's students include Emil Kraepelin, James McKeen Cattell, and G. Stanley Hall.
Sigmund Freud of Vienna, who is considered as the father of modern psychology, originated a new method called the Free Association Technique. Freud considered that mind has three parts  the conscious, the pre-conscious and the unconscious. He considered that 90% of the mind is the unconscious mind.