Angular Resolution

The buttons below represent the distance between the outer edges of two 2x2 pixel squares. Choose a button from 2-7 pixels (choose the "2" button to view a single 2x2 pixel square). If you choose 3 or 4, you will get a 2x3 or a 2x4 pixel rectangle, respectively. Sit 1 meter or more from the screen and see if you can resolve the two squares. At a distance of 1 meter, 2 pixels represent an angular size of about 2 arc minutes on a typical monitor. For your own monitor, you can measure the actual length of the pixel separation by measuring the red bar of 100 pixels below.