Planisphaerium
id:
planisphaerium-319-3646235
title:
Planisphaerium
text:
The Planisphaerium is a work by Ptolemy. The title can be translated as "celestial plane" or "star chart". In this work Ptolemy explored the mathematics of mapping figures inscribed in the celestial sphere onto a plane by what is now known as stereographic projection. This method of projection preserves the properties of circles.
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Planisphaerium
date created:
date modified:
2023-09-07T20:20:51Z
main entity:
{"identifier":"Q2420991","url":"https://www.wikidata.org/entity/Q2420991"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/16/Ptolemy_16century.jpg","width":1173,"height":1527}
fields total:
13
integrity:
14