An Illusion of Size

Abstract

I READ Dr. Loewenstein's letter¹ with the above title with great interest and began by repeating the tests which he describes. I took a bright nickel three penny piece (1944) and polished it; I took also a very dull one which was minted during 1937. I placed them on a black background and at once saw, as Dr. Loewenstein states, that the older one appeared the larger.