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Special relativity
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Special relativity explained in under three minutes
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Visualization of Einstein's special relativity
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Do you really understand Einstein’s theory of relativity? - BBC News
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What is the difference between Special Relativity and General Relativity?
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Relativity of Simultaneity | Special Relativity Ch. 4
In physics, special relativity is the generally accepted and experimentally well-confirmed physical theory regarding the relationship between space and time. In Albert Einstein's original pedagogical treatment, it is based on two postulates:The laws of physics are invariant in all inertial systems.
The speed of light in a vacuum is the same for all observers, regardless of the motion of the light source.
Origins and significance
Traditional "two postulates" approach to special relativity
Principle of relativity
Lorentz invariance as the essential core of special relativity
Consequences derived from the Lorentz transformation
Optical effects
Dynamics
Relativity and unifying electromagnetism
Theories of relativity and quantum mechanics
Status
Technical discussion of spacetime