Blue hour
id:
blue-hour-187-1206653
title:
Blue hour
text:
The blue hour is the period of twilight when the Sun is at a significant depth below the horizon. During this time, the remaining sunlight takes on a mostly blue shade. This shade differs from the colour of the sky on a clear day, which is caused by Rayleigh scattering. The blue hour occurs when the Sun is far enough below the horizon so that the sunlight's blue wavelengths dominate due to the Chappuis absorption caused by ozone. Since the term is colloquial, it lacks an official definition such
brand slug:
wiki
category slug:
encyclopedia
description:
Period of twilight in the morning or evening
original url:
https://en.wikipedia.org/wiki/Blue_hour
date created:
2005-12-15T13:51:12Z
date modified:
2024-09-08T10:31:48Z
main entity:
{"identifier":"Q882565","url":"https://www.wikidata.org/entity/Q882565"}
image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/2/26/S%C3%A9_Catedral_de_Bragan%C3%A7a_-_Portugal_%283663183339%29.jpg","width":3843,"height":5124}
fields total:
13
integrity:
16