The Einstein radius is the radius of an Einstein ring, and is a characteristic angle for gravitational lensing in general, as typical distances between images in gravitational lensing are of the order of the Einstein radius.
Read more about Einstein Radius: Derivation
Famous quotes containing the word einstein:
“I found out that a doctor’s wife needs the understanding of an Einstein and the patience of a saint.”
—Daniel Mainwaring (1902–1977)