Rotating furnace
id:
rotating-furnace-312-3285796
title:
Rotating furnace
text:
A rotating furnace is a device for making solid objects which have concave surfaces that are segments of axially symmetrical paraboloids. Usually, the objects are made of glass. The furnace makes use of the fact, which was known already to Newton, that the centrifugal-force-induced shape of the top surface of a spinning liquid is a concave paraboloid, identical to the shape of a reflecting telescope's primary focusing mirror. Paraboloids can be used in various ways, including as primary mirrors
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Rotating_furnace
date created:
date modified:
2023-10-25T20:22:48Z
main entity:
{"identifier":"Q7370298","url":"https://www.wikidata.org/entity/Q7370298"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/12/Paraboloid_of_Revolution.svg","width":512,"height":440}
fields total:
13
integrity:
14