### Question --- What is the "weak lensing effect"? How does this differ from “strong lensing”? What are each of these phenomena useful for to astronomers? ### Answer --- ##### What is the "weak lensing effect"? ![[Gravitational Lensing#Weak Lensing]] ##### How does this differ from “strong lensing”? ![[Gravitational Lensing#Strong Lensing]]