Monday, March 21, 2011

Bases of general relativity

At the age of 25 years, Albert Einstein (1879-1955) came with his theory of relativity, in fact, the theory of relativity. It was the year of 1905.

Ten years of the latter, in the year 1916, after much mental effort he published his theory of general relativity.

Two theories have made a huge change in energy, matter and space perception. Relativity treats bodies and constant velocity relative to the other, then general relativity deals with particles moving in a uniform accelerated body.

We discuss here only GRT and leave the relativity for another article.

Similarly, what are the basics behind general relativity?

General Relativity deals effectively with gravitational interaction between objects. It therefore discusses the rules that govern the giant universe and galaxies within.

All this started when Einstein has attempted to express queries faster in terms of gravitational field. He stated that the acceleration of the "fall" object can be couched in terms of movement of the object in the "domain" gravitational, rather because of the "force" of gravitation, the object sense, as submitted by the classical laws of physical mechanics. Einstein said: there is no gravitational forces there. There is a gravitational field that causes objects to be moved into a movement accelerated (fall or travelling in an orbit of some).

What was this gravitational Einstein had defined? He stated that the domain of space-time is curved actually. Where there is a giant mass, it deforms the space (such as creating a deep curve in space) where objects fall if they are sufficiently close.

Clearly understand this, imagine the following commonly used example: assume a rubber fabric flat bit found much stretched. Now this rubber fabric into a metal ball. Metal ball will create a curve in the fabric. Another object moves on this fabric, where there is sufficient proximity will be trapped by this curve and accelerate towards the metal ball. It is actually the gravitational field, consisting of curved space attempts to intercept any mobile object there.

This example, although understandable for a case of rubber 2-dimensional tissues is so difficult to understand for the domain four-dimensional space-time.

Anyway, Einstein was in need of a decade of hard mental effort and using complex mathematical and geometry different principles to formulate his new revolutionary theory.

It was obviously a revolution. This assumption mined the Newtonian mechanics classic 300 years who ruled on the motion of cosmos, who actually did an excellent job, reflected in the incredible journey into space and man landing on the moon.

Unlike the relativity that was simple enough to understand and adopt, even for ordinary people quite simple mathematics to support general relativity was really a new concept difficult to digest. The idea of a curved universe and complex geometry and mathematics behind this unique scientific theory very little.

Although that new theory has failed to explain certain abnormal some cosmic and many objects orbits that one of the scientific experiment in the world in 1919 prove that light is flounder in the vicinity of a great cosmic object as the equation of general relativity predicted, yet it took several years later until general relativity did win its importance in the world of science.

General Relativity was in full compliance with Newtonian mechanics and proved to be more precise when huge object are disturbing and almost de-light velocity is managed. Newtonian mechanics for example may specifically explain how gravitational forces act and how they are transmitted. He also stated that the law of force between object at any time. For example, if the Sun suddenly disappears, the Earth will be immediately feel this change and immediately its track is going to change. However, according to relativity General, the disappearance of the Sun will be felt by land only after eight minutes at a time where change gravitational wave will make its way from the Sun to Earth, and then only orbit begins to respond to change.

Years evidence more predictions of general relativity were found, and several theories have been developed on top. Black holes, expansion and inflation universe big bang and other funny concepts are based on general relativity.

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