Dandelin spheres
id:
dandelin-spheres-182-9229882
title:
Dandelin spheres
text:
In geometry, the Dandelin spheres are one or two spheres that are tangent both to a plane and to a cone that intersects the plane. The intersection of the cone and the plane is a conic section, and the point at which either sphere touches the plane is a focus of the conic section, so the Dandelin spheres are also sometimes called focal spheres. The Dandelin spheres were discovered in 1822. They are named in honor of the French mathematician Germinal Pierre Dandelin, though Adolphe Quetelet is so
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Dandelin_spheres
date created:
2004-05-28T00:19:56Z
date modified:
2024-09-06T11:15:00Z
main entity:
{"identifier":"Q676413","url":"https://www.wikidata.org/entity/Q676413"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/18/Dandelin_spheres.svg","width":330,"height":397}
fields total:
13
integrity:
15