Video encyclopedia

Special relativity


Special relativity explained in under three minutes


Visualization of Einstein's special relativity


Einstein and The Special Theory of Relativity


What Is The Special Theory Of Relativity?


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.
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  • 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