ALAN
See also: Appendix:Variations of "alan"
English
editNoun
editALAN (uncountable)
- Initialism of artificial light at night.
- 2021 March 16, Mattias Green, Yueng-Djern Lenn, 30-Second Oceans: 50 Key Ideas about the Sea's Importance to Life on Earth, 30 Second, →ISBN:
- Skyglow is a form of artificial light at night (ALAN) whereby the atmosphere scatters light back to Earth, creating a glowing dome of diffused light that can extend hundreds of kilometres into the sea.