por | Jul 24, 2026
Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green. Consist of a number of colored plates. On each plate is printed a circle made of many different sized dots of slightly different colors,...
por | Jul 24, 2026
Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green. Consist of a number of colored plates. On each plate is printed a circle made of many different sized dots of slightly different colors,...