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

Conics in pictures

The relativity of conics

Pascal and Brianchon


Three focus-sharing conics

Three asymptote-sharing conics and else