Relativity is a branch of physics that refers to two theries, general relativity and special relativity by Albert Einstein.  General relativity explains the law of gravitation and its relation to other forces of nature.  Special relativity applies to elementary particles and their interactions, describing all their physical phenomena except gravity.

Relativity Subtopics

  • Einstein Field Equations
  • General Relativity
  • Special Relativity

Relativity Concepts

  • Covariance
  • Einstein Manifold
  • Equivalence Principle
  • Four-momentum
  • Four-vector
  • General Principle of Relativity
  • Geodesic Motion
  • Gravity
  • Gravitoelectromagnetism
  • Inertial Frame of Reference
  • Invariance
  • Length Contraction
  • Lorentzian Manifold
  • Lorentz Transformation
  • Mass-energy Equivalence
  • Metric
  • Minkowski Diagram
  • Minkowski Space
  • Principle of Relativity
  • Proper Length
  • Proper Time
  • Reference Frame
  • Relativity of Simultaneity
  • Rest Energy
  • Rest Mass
  • Space Time
  • Special Principle of Relativity
  • Speed of Light
  • Stress-energy Tensor
  • Time Dilation
  • Twin Paradox
  • World Line

Nomenclature & Symbols for Engineering, Mathematics, and Scienceor 

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Atmospheric Pressure
Center of Mass
Centripetal Force
Free Fall
Relativistic Energy
Relativistic Mass
Relativistic Momentum
Time of Flight
Universal Gravitational Constant