When measuring incomitant deviations with prisms with each eye âfixing,â it is imperative to switch the prism to always be before the non-fixing eye. Otherwise the âfixingâ eye behind the prism will not truly be looking in the intended direction, and major measurement errors can occur.
Gestalt is a general description for the concepts that make unity and variety possible in design. It is a German word that roughly translates as whole or form.. Gestalt theory is involved with visual perception and the psychology of art among other things.
Christian von Ehrenfels (1859-1932), who studied with Brentano in Vienna, is the actual originator of the term Gestalt as the Gestalt psychologists were to use it. In 1890, in fact, he wrote a book called On Gestalt Qualities. One of his students was none other than Max Wertheimer.