Mach Band Illusion

Ernst Mach (1838-1916)
(Illustration taken from http://econc10.bu.edu/Czech_rep/Mach_Ernst.htm )

Ernst Mach, a famous physicist published many papers such as the principles of supersonics, famously known as Mach 1 which represents the speed that an object is travelling at the speed of sound. However, interestingly, he published many papers relating to the neurophysiological theories behind the phenomenon on visual effect which is named after him, Mach Band. Mach’s theories were researched on only after World War II by Floyd Ratliff and thereafter, became the basis of many other research studies. One major contribution on Mach Band theory is to radiology (Papageorges, et al., 1989).