Table of Contents
What can General relativity not explain?
Our observations are consistent with Einstein’s theory of general relativity. It cannot fully explain gravity inside a black hole, and at some point we will need to move beyond Einstein’s theory to a more comprehensive theory of gravity that explains what a black hole is.”
What does General relativity include?
General relativity is a metric theory of gravitation. At its core are Einstein’s equations, which describe the relation between the geometry of a four-dimensional pseudo-Riemannian manifold representing spacetime, and the energy–momentum contained in that spacetime.
Can General relativity be proven?
Tests of general relativity General relativity has also been confirmed many times, the classic experiments being the perihelion precession of Mercury’s orbit, the deflection of light by the Sun, and the gravitational redshift of light. Other tests confirmed the equivalence principle and frame dragging.
How was General relativity verified?
In 1919 observation of a solar eclipse confirmed Einstein’s prediction that light is bent in the presence of mass. This experimental support for his general theory of relativity garnered him instant worldwide acclaim. This has been measured directly and also through the gravitational redshift of light.
What is the essence of general relativity?
General relativity is the theory of space and time and gravity. The essence of the theory is simple: gravity is geometry. The e\ects that we attribute to the force of gravity are due to the bending and warping of spacetime, from falling cats, to orbiting spinning planets, to the motion of the cosmos on the grandest scale.
Do you need prior knowledge of general relativity to study it?
No prior knowledge of general relativity is assumed, but it’s fair to say that you’ll \\fnd the going easier if you’ve been exposed to the subject previously. The lectures owe a debt to previous incarnations of this course and, in particular, the excellent lectures of Harvey Reall.
How was Einstein’s theory of relativity confirmed?
The English astronomer Arthur Eddington confirmed Einstein ’s predictions of the deflection of light from other stars by the Sun’s gravity using measurements taken in West Africa during an eclipse of the Sun in 1919, after which the General Theory of Relativity was generally accepted in the scientific community.
Is presentism compatible with special relativity?
That view is called Presentism and it is clearly in conflict with both SR and GR. In Special Relativity, the past and future “exist” simply because of the relativity of simultaneity. Consider two relatively moving reference frames in the standard configuration and the event where both origins are co-located.