Burning glass
id:
burning-glass-244-16039891
title:
Burning glass
text:
A burning glass or burning lens is a large convex lens that can concentrate the sun's rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface. Burning mirrors achieve a similar effect by using reflecting surfaces to focus the light. They were used in 18th-century chemical studies for burning materials in closed glass vessels where the products of combustion could be trapped for analysis. The burning glass was a useful contrivance in the days before elect
brand slug:
wiki
category slug:
encyclopedia
description:
Convex lens for fire making
original url:
https://en.wikipedia.org/wiki/Burning_glass
date created:
date modified:
2023-08-28T00:52:29Z
main entity:
{"identifier":"Q368027","url":"https://www.wikidata.org/entity/Q368027"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/8/86/Priestley_Burning_Lens_Replica.jpg","width":1536,"height":2048}
fields total:
13
integrity:
15