- #1
Silviu
- 624
- 11
Hello! What book should I use as an introduction to General Relativity? Something that includes an introduction of the math behind GR (tensors for example) would be much appreciated.
Thank you!
Thank you!
General relativity is a theory of gravitation developed by Albert Einstein in 1915. It describes the effects of gravity on objects in space and time, and it is considered one of the most important theories in modern physics.
Newton's theory of gravity is based on the concept of force, while general relativity is based on the concept of curved spacetime. In general relativity, gravity is described as the curvature of spacetime caused by the presence of mass and energy.
The curvature of spacetime in general relativity explains the effects of gravity. Objects with mass cause spacetime to bend, and this bending influences the motion of other objects in the vicinity. This explains why planets orbit around stars and why objects fall towards the Earth.
According to general relativity, time is relative and can be affected by the presence of gravity. In other words, time moves slower in stronger gravitational fields. This has been confirmed by experiments, such as the Hafele-Keating experiment, which showed that time moves slower for objects closer to the Earth's surface.
General relativity has several practical applications, including the prediction of the existence of black holes, the explanation of the bending of light around massive objects, and the correction of GPS signals for time dilation effects. It also provides a framework for understanding the structure and evolution of the universe.