Einstein Ring Gravitational Lensing
Gravitational lensing of a background source by a point mass — drag source to reposition
Lens Mass M
2.00
Lens Distance D_L
0.50
Source Distance D_S
1.00
Source size
8
Show rays
30
θ_E = √(4GM/c² · D_LS/(D_L · D_S)) — Einstein radius