Gravitational Lensing
Gravitational Lensing Visualization In the early 1900s the great German physicist Albert Einstein gave his groundbreaking theory of relativity. In the theory, he predicted that space and time is not what we had always perceived, rather, it is a 4-dimensional net-a fabric of spacetime. This fabric bent around any object existing in the fabric. The distortion increased near massive objects and was negligible around tiny bodies like us. This gave rise to a new concept of gravity. For generations gravity was considered to be the weakest of all the fundamental forces and was considered to be an attractive force between two masses. Now according to Einstein’s theory, gravity was causing a spacetime distortion, which was the new reason to explain the revolution of planets around massive bodies like sun. Light has been a mystery since forever, but some properties were absolutely right then and are true even now. For example: light travels in straig...