light affected by gravity in einsteins general theory of relativity
Look below at yopu previous post. I tried again
In Einstein's general theory of relativity, light is indeed affected by gravity. According to this theory, gravity is not considered simply as a force like in Newtonian physics, but rather as the curvature of spacetime caused by massive objects.
To understand how light is affected by gravity, we need to consider the concept of spacetime curvature. In the presence of a massive object, such as a star or a planet, the spacetime around it curves due to its gravitational field.
When light travels through this curved spacetime, it follows the curvature just like any other particles or objects would. This means that the path of light is bent by gravity. In other words, light follows the curved geometry of the spacetime in its vicinity.
A well-known example of this is gravitational lensing. When light from a distant object passes near a massive object, the gravity of the massive object bends the path of light. As a result, the distant object appears distorted or magnified to an observer.
One of the crucial confirmations of Einstein's theory of relativity came during a solar eclipse in 1919 when Sir Arthur Eddington observed starlight bending as it passed near the sun. This observation provided strong evidence in support of Einstein's theory and showcased the effect of gravity on light.
So, in Einstein's general theory of relativity, the presence of gravity causes the curvature of spacetime, which, in turn, leads to the bending of light as it passes through that curved spacetime.