The History of Gravitational Lensing in Cosmology by Nick Kaiser

This lecture on the history of gravitational lensing in cosmology aims to review the development of this subject, starting from Newton's understanding of light deflection to Einstein's calculations and modern applications like weak lensing. The goal is to provide insights into the evolution of gravitational lensing in cosmology. The intended audience includes individuals interested in cosmology, astrophysics, and the history of scientific discoveries. The teaching method involves a lecture format delivered by a renowned expert in the field, Nick Kaiser, who has made significant contributions to cosmology and observational astronomy.