Daylight factor
id:
daylight-factor-316-3491151
title:
Daylight factor
text:
In architecture, a daylight factor (DF) is the ratio of the light level inside a structure to the light level outside the structure. It is defined as: where,
Ei = illuminance due to daylight at a point on the indoors working plane,
Eo = simultaneous outdoor illuminance on a horizontal plane from an unobstructed hemisphere of overcast sky. To calculate Ei, requires knowing the amount of outside light received inside of a building. Light can reach a room via through a glazed window, rooflight, or
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Daylight_factor
date created:
date modified:
2023-12-27T18:35:44Z
main entity:
{"identifier":"Q210269","url":"https://www.wikidata.org/entity/Q210269"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/11/Daylight_factor_study_colour_plot.jpg","width":1033,"height":346}
fields total:
13
integrity:
14