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:
“Thine eyes shall see the light of distant skies:
Yet, Cole! thy heart shall bear to Europe’s strand
A living image of our own bright land,
Such as upon thy glorious canvas lies;”
—William Cullen Bryant (1794–1878)
“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)
“From whichever angle one looks at it, the application of racial theories remains a striking proof of the lowered demands of public opinion upon the purity of critical judgment.”
—Johan Huizinga (1872–1945)