Dierck-Ekkehard Liebscher

Relativity, geometry, and cosmology in pictures

⇐    Gesamtschau    Distances    Reflections    Projective geometry    Conics    Minkowski    Lobachevski    Curvature    Michelson    Space-time    Special relativity    Try it yourself relativity    Mass and energy    Gravitation    Cosmology    Cosmic nucleosynthesis    Cosmic structure    Cosmic vacuum    Cosmic pinpoints    Time and entropy    Quantum physics    Physics supplement    Paper polyhedra

Relativity: try it yourself

 Lichteck (quadrilateral of light)

Symmetry

Time dilation

Twin paradox (Zwillingsparadoxon)


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