Caustic
like a whirlpool that stretches and bends the lights around it
Technical definition
A region in the vicinity of a gravitating source where the gravitational lensing effect is so strong that the paths of nearby light rays converge.
like a whirlpool that stretches and bends the lights around it
A region in the vicinity of a gravitating source where the gravitational lensing effect is so strong that the paths of nearby light rays converge.