This is an Open Thread / Coffee Hour and all topics of conversation are welcome. Today's suggested topic is the Stereographic Projection.
From Wikipedia: Illustration by Rubens for "Opticorum libri sex philosophis juxta ac mathematicis utiles", by François d'Aiguillon.
What is for dinner? How are you doing? What is on your mind. If you are new to Street Prophets please introduce yourself beyond the fold in a comment. This is an Open Thread / Coffee Hour and all topics of conversation are welcome. Today's Coffee Hour is brought to you by Stereographic Projection.
The stereographic projection, in geometry, is a particular mapping (function) that projects a sphere onto a plane. The projection is defined on the entire sphere, except at one point — the projection point. Where it is defined, the mapping is smooth and bijective. It is conformal, meaning that it preserves angles. It is neither isometric nor area-preserving: that is, it preserves neither distances nor the areas of figures.
From Wikipedia, the free encyclopedia: Stereographic Projection