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

Projective geometry in pictures

 Perspective

Dürer

Cross ratio (Doppelverhältnis)

Complete quadrangle (Vollständiges Viereck)

Polarity

Lense map


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