Size constancy fails below half a degree
Size constancy fails below half a degree is a scholarly work, published in 1980 in ''Nature''. The main subjects of the publication include angular diameter, mathematics, observer effect, exposome, degree, subjective constancy, systematic review, color constancy, and image. By observing objects, including the Moon, and after-images, authors demonstrate here that size constancy holds when image size is above half a degree, and breaks down when it is less.