Definition of theory of relativity Theory of relativity
We found 4 definitions of theory of relativity from 4 different sources.
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What does theory of relativity mean?
WordNet
Noun |
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| theory of relativity - (physics) the theory that space and time are relative concepts rather than absolute concepts | ||
| relativity, relativity theory, Einstein's theory of relativity | ||
| scientific theory a theory that explains scientific observations; "scientific theories must be falsifiable" | ||
| natural philosophy, physics the science of matter and energy and their interactions; "his favorite subject was physics" | ||
| einstein's general theory of relativity, general relativity, general relativity theory, general theory of relativity a generalization of special relativity to include gravity (based on the principle of equivalence) | ||
| einstein's special theory of relativity, special relativity, special relativity theory, special theory of relativity a physical theory of relativity based on the assumption that the speed of light in a vacuum is a constant and the assumption that the laws of physics are invariant in all inertial systems | ||
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Wiktionary 
- theory of relativity (Noun)
The generic term of the special relativity and the general relativity , two theories in physics developed mainly by Albert Einstein at the beginning of the 20th century from which several important results such as the equivalence of matter and energy and the Einstein field equation s are derived.
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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theory of relativity
Theory of Albert Einstein, composed by two scientific theories in physics: special relativity and general relativity. These theories were conceived in order to explain the fact that electromagnetic waves do not conform to the Newtonian laws for motion (source: Wikipedia).
Wikipedia 
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The Theory of Relativity was created by Galileo Galilei in the 1600s. It was then developed more by Albert Einstein in the early 1900s. The theory of relativity is two theories. The first is Special Relativity and the second is General Relativity.
Special Relativity.
Special Relativity says that every person has their own time. One person's clock says something different from another person's clock. The reason a person's time can be different from another's is because of Time Dilation, which can be thought of more easily by the Twin Paradox.
Twin Paradox.
The Twin Paradox shows how time is changed because of speed and mass. The faster someone moves or the more mass they have, the slower time passes for them. This is shown by a pair of twins. Imagine that one of the twins goes away at fast speeds while the other twin stays home. When he returns, the twin that travelled will be younger than his brother who stayed at home. This is because time moved slower for him while he was traveling than for his brother who stayed home.
General Relativity.
General Relativity adds gravity to Special Relativity. It says that space and time are joined together. Space is like a grid. Balls (planets) on the grid bend it because of their weight or speed. As one ball moves towards another it falls towards the other ball due to the dent in the grid. It can be shown by putting balls on a trampoline. The dent in the grid is like gravity.
How it works with Special Relativity.
If space and time are one
