What is Relativity:
Relativity comes from ‘relative to’ indicating that there is no absolute reference point, that is, everything is explained taking into account the relationship it has with another reference. For example, the relativity of values, cultural relativity or the relativity of sentences.
The most famous relativity is theory of relativity by Albert Einstein published in 1915 which includes both:
- the theory of special relativity (1905): who defined the behavior of bodies with constant velocity,
- the general theory of relativity (1915): defines how the density of matter and/or energy determine the geometry of space-time lines.
The theory of General Relativity takes as a principle that laws of physics are the same anywhere in the Universe. Bearing this in mind, the theory formulates the behaviour in space and in time variable speed objects in the Universe taking into account the behavior of gravitational effects.
In this way, with the theory of General Relativity, it is possible to predict from the location and existence of black holes, the torsion of light due to gravity (gravitational waves) or the behavior of a planet with respect to its orbit.
General Relativity defines the following constants:
- There is no absolute reference point but points of reference in relation to another.
- The speed of light is constant. The speed of light is always the same no matter who measures it or how fast the person measuring it is going.
- Nothing can go faster than the speed of light. In fact it is the fastest speed detected in the Universe traveling at about 299,793 kilometers per second.
See also:
- Cosmology
- Branches of physics