Example image of eyePlorer eyePlorer map for 'Special relativity': Albert Einstein Hendrik Lorentz Henri Poincaré Inertial frame of reference Theoretical physics Classical electromagnetism Galilean invariance Mechanics Physical law Preferred frame Observer (special relativity) Speed of light Length contraction Relativity of simultaneity Time dilation Mass–energy equivalence Matter Spacetime Electromagnetic radiation Invariant mass Principle of relativity General covariance General relativity Gravitation Orders of approximation World line Homogeneity (physics) Isotropy Poincaré group Minkowski space Four-vector Galileo Galilei Luminiferous aether Michelson–Morley experiment Lorentz transformation Twin paradox Absolute time and space Ladder paradox Velocity-addition formula Inertia Mass Reference frame Lorentz factor Linear map One-parameter group Rapidity Lorentz scalar Measuring rod Causality Faster-than-light