The Retinal Image and Visual Angle
As the above sketch shows, a real image of the object is formed on the retina between points and . (See visual system). For small angles, the size of this retinal image is
where is the distance from the nodal points to the retina, about 17 mm.
Read more about this topic: Visual Angle
Famous quotes containing the words image, visual and/or angle:
“All things uncomely and broken, all things worn out and old,
The cry of a child by the roadway, the creak of a lumbering cart,
The heavy steps of the ploughman, splashing the wintry mould,
Are wronging your image that blossoms a rose in the deeps of my heart.”
—William Butler Yeats (1865–1939)
“Dialogue should simply be a sound among other sounds, just something that comes out of the mouths of people whose eyes tell the story in visual terms.”
—Alfred Hitchcock (1899–1980)
“Modesty is the only sure bait when you angle for praise.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)