## What is special and general relativity?

The theory of relativity is traditionally broken into two parts, special and general relativity. Special relativity provides a framework for translating physical events and laws into forms appropriate for any inertial frame of reference. General relativity addresses the problem of accelerated motion and gravity.

## What is theory of relativity PDF?

The special theory of relativity was based on two main postulates: first, that the speed of light is constant for all observers; and second, that observers moving at constant speeds should be subject to the same physical laws.

What is the main difference between special and general theory of relativity?

Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its relation to other forces of nature. It applies to the cosmological and astrophysical realm, including astronomy.

### Is there a difference between the general relativity and special relativity explain why?

Special relativity throws light on the observers who are showing movement at constant velocity and General relativity focusses on observers who are experiencing acceleration. Einstein made a name in the world of physics because his theories of relativity made revolutionary forecasts.

### What is special relativity used for?

Today, special relativity is proven to be the most accurate model of motion at any speed when gravitational and quantum effects are negligible. Even so, the Newtonian model is still valid as a simple and accurate approximation at low velocities (relative to the speed of light), for example, everyday motions on Earth.

What is the law of general relativity?

Einstein’s 1915 general theory of relativity holds that what we perceive as the force of gravity arises from the curvature of space and time. The scientist proposed that objects such as the sun and the Earth change this geometry.

#### What are the 2 postulates of special relativity?

The first postulate of special relativity is the idea that the laws of physics are the same and can be stated in their simplest form in all inertial frames of reference. The second postulate of special relativity is the idea that the speed of light c is a constant, independent of the relative motion of the source.

#### What are two theory of relativity?

2.3 There are two theories of relativity: special relativity and general relativity. 2.4 Special relativity describes how properties of the physical world change as objects move close to the speed light, while general relativity describes how properties of the world change in the presence of sources of gravity.

Which came first general or special relativity?

Who came up with the theory of relativity? Albert Einstein. He published the first part of his theory — special relativity — in the German physics journal Annalen der Physik in 1905 and completed his theory of general relativity only after another decade of difficult work.

## What is an example of general relativity?

For example, an observer will see a ball fall the same way in a rocket (left) as it does on Earth (right), provided that the acceleration of the rocket is equal to 9.8 m/s2 (the acceleration due to gravity at the surface of the Earth).

## What is the formula for relativity?

E=mc2
Einstein went on to present his findings mathematically: energy (E) equals mass (m) times the speed of light (c) squared (2), or E=mc2.

What is the difference between special and general relativity?

Overview and Key Difference

• What is General Relativity
• What is Special Relativity
• Side by Side Comparison – General Relativity vs Special Relativity in Tabular Form
• Summary
• ### What’s so special about special relativity?

The part that makes special relativity so “special” is because these laws apply to everyone, everywhere at every time, including deep inside gravitational fields of all magnitudes. But to explain that, you need a more general theory: Einstein’s theory of general relativity.

### What are the prerequisites to studying general relativity?

Learn basic vector algebra and calculus. My#1 resource recommendation for this would be Khan Academy (link to their website).

• Learn the basics of special relativity.
• Study some tensor calculus and differential geometry.
• Build some intuition for general relativity.
• Study from a good general relativity textbook.
• What are the types of special relativity?

special relativity involving inertial frames general relativity involving accelerated or gravitational frames In the holistic viewpoint of relativity theory, concepts such as length, mass and time take on a much more nebulous aspect than they do in the apparently rigid reality of our everyday world.