Tractatus Logico-Philosophicus A Book by Ludwig Wittgenstein www.gutenberg.org The totality of factsEverything that can be saidI am my worldEthics and aesthetics are oneWhereof one cannot speak
What we have known since long A Quote by Ludwig Wittgenstein The problems are solved, not by giving new information, but by arranging what we have known since long. notetakingunderstandingproblemsinformation
Caustic (optics) Caustics made by the surface of water. In optics, a caustic is the envelope of light rays reflected or refracted by a curved surface or object, or the projection of that envelope of rays on another surface. The caustic is a curve or surface to which each of the light rays is tangent, defining a boundary of an envelope of rays as a curve of concentrated light. Wikipedia en.wikipedia.org Architectural CausticsCaustic Engineering caustics