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Difference Between General Relativity and Special Relativity

November 22, 2011 Posted by admin

General Relativity vs Special Relativity
 

Albert Einstein proposed the special theory of relativity in 1905. Later he proposed the general theory of relativity in 1916. These two theories became the foundation stones for the modern physics. The theory of relativity describes the behavior of matter when the velocity of it reaches the speed of light. The basic principle behind the theory of relativity is the limiting velocity of natural space as the speed of light. A proper understanding in these theories is required as they are used in many fields such as nuclear physics, astronomy, cosmology and many more. A proper understanding in these theories is required to excel in such fields. In this article, we are going to discuss what general relativity and special relativity are, their underlying principles, their similarities and finally the differences between general relativity and special relativity.

What is Special Relativity?

Special relativity, or more precisely said, special theory of relativity was proposed by Albert Einstein is 1905. The accepted dynamics at that time were the Newtonian mechanics. The special theory of relativity explained some of the observations that could not be described using classical mechanics. To understand the special theory of relativity properly, one must first understand the concept of an inertial frame of reference. An inertial frame is a frame of reference, which is not accelerating to a predefined inertial frame. The inertial frame defined is the sun or the earth. It is important to note that all inertial frames only show rectilinear motions with respect to other inertial frames; no inertial frame is special. The special theory of relativity only deals with the inertial frames. Even though, we cannot remotely understand the special theory of relativity using a few lines, there are some useful concepts that can be helpful in describing the length contraction and time dilation. The basis of special relativity is that, no objects that are moving in inertial frames can have relative velocities greater than the speed of light.

What is General Relativity?

The general theory of relativity deals with gravity. From a combination of the special theory of relativity and Newton’s law of universal gravitation, the general theory of relativity describes gravity as a curvature in the space-time continuum. In both the general and special theories of relativity, time is not an absolute quantity. Time dilation and length contraction are observed in such systems. The time dilation and length contraction are only effective if the object is moving with a velocity comparable with the velocity of light with respect to the observer. General theory of relativity is a more advanced and generalized version of the special theory of relativity.

 

What is the difference between General Relativity and Special Relativity?

• Special relativity only deals with the inertial frames. The general theory of relativity deals with space-time continuum.

• General theory of relativity is made of a more advanced and generalized version of the special theory of relativity.

• Phenomena such as space-time curvature discussed in the general theory of relativity are not discussed in the special theory of relativity.

 

Related posts:

Difference Between Time Dilation and Length Contraction Difference Between Speed of Light and Sound Difference Between Energy and Force Difference Between Energy and Matter Difference Between Conservation of Energy and Momentum

Filed Under: Physics Tagged With: frame of reference, general relativity, general theory of relativity, inertial frame, special relativity, special theory of relativity, theory of relativity

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