Visit http://ilectureonline.com for more math and science lectures!

To donate:
http://www.ilectureonline.com/donate
https://www.patreon.com/user?u=3236071

We will learn the proof of the theory of Gravitational Lensing and Einstein's Cross and comparing it with a convex lens and an observed object.

Next video in this series can be seen at:
https://youtu.be/Eira9klYoRU