Phosphoroscope
id:
phosphoroscope-297-8311909
title:
Phosphoroscope
text:
A phosphoroscope is piece of experimental equipment devised in 1857 by physicist A. E. Becquerel to measure how long it takes a phosphorescent material to stop glowing after it has been excited. It consists of two rotating disks with holes in them. The holes are arranged on each disk at equal angular intervals and a constant distance from the centre, but the holes in one disk do not align with the holes in the other. A sample of phosphorescent material is placed in between the two disks. Light c
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Phosphoroscope
date created:
date modified:
2022-07-24T18:32:49Z
main entity:
{"identifier":"Q7187560","url":"https://www.wikidata.org/entity/Q7187560"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/e/e5/PSM_V04_D325_Becquerel_phosphoroscope.jpg","width":1891,"height":1833}
fields total:
13
integrity:
14