Fajar senja: Perbedaan antara revisi
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{{redirect|Twilight}}
[[Berkas:蘿蔔坑夜色.jpg|[[Siluet]] manusia dan objek sekitar ketika
[[Berkas:Samocice 2.jpg|jmpl|250px|
'''
[[Sinar matahari]] yang tersebar di [[atmosfer Bumi|atmosfer]] atas menyinari atmosfer bawah, dan permukaan [[Bumi]] pun tidak terang dan tidak gelap. Matahari sendiri tidak terlihat karena berada di bawah [[cakrawala]]. Karena kualitas [[cahaya ambien]] yang tidak biasa pada periode ini, cahaya aram sangat dikenal oleh fotografer dan pelukis yang menjulukinya sebagai "[[jam biru]]", sesuai istilah [[bahasa Prancis|Prancis]] ''l'heure bleue''.
== Subkategori metode ==
Terdapat tiga subkategori metode dan berterima secara umum dalam menetukan
*
:posisi matahari di bawah ufuk sampai dengan ketinggian -6°
*
:posisi matahari di bawah ufuk dengan ketinggian -6°sampai dengan -12°
*
:posisi matahari di bawah ufuk dengan ketinggian -12° sampai dengan -18°
Baris 21 ⟶ 19:
* [[Jam biru]]
* [[BMCT]]
* [[Bayangan Bumi]]
* [[Gloom]]
* [[Kilatan hijau]]
* [[Malam kutub]]
* [[Kereta api Fajar dan Senja Utama Yogya|Fajar Senja Utama Yogya]]
* [[Kereta api Fajar dan Senja Utama Solo|Fajar Senja Utama Solo]]
== Catatan kaki ==
Baris 49:
{{Wiktionary|twilight}}
{{commons|Twilight}}
* [http://www.spectralcalc.com/solar_calculator/solar_position.php Twilight Calculator] {{Webarchive|url=https://web.archive.org/web/20210124235959/http://www.spectralcalc.com/solar_calculator/solar_position.php |date=2021-01-24 }} Compute twilight times.
* [http://www.usno.navy.mil/USNO/astronomical-applications/astronomical-information-center/rise-set-twi-defs Definition of Twilight] {{Webarchive|url=https://web.archive.org/web/20110606224804/http://www.usno.navy.mil/USNO/astronomical-applications/astronomical-information-center/rise-set-twi-defs |date=2011-06-06 }} US Naval Observatory.
* [http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-year-us Twilight time calculator] {{Webarchive|url=https://web.archive.org/web/20110518135639/http://www.usno.navy.mil/USNO/astronomical-applications/data-services/rs-one-year-us |date=2011-05-18 }}
* [http://herbert.gandraxa.com/herbert/lod.asp Formulae to calculate twilight duration] {{Webarchive|url=https://web.archive.org/web/20080731153712/http://herbert.gandraxa.com/herbert/lod.asp |date=2008-07-31 }} by Herbert Glarner.
* [http://www.ecy.wa.gov/programs/eap/models/twilight.zip An Excel workbook] {{Webarchive|url=https://web.archive.org/web/20061208171818/http://www.ecy.wa.gov/programs/eap/models/twilight.zip |date=2006-12-08 }} with VBA functions for twilight (dawn and dusk), sunrise, solar noon, sunset, and solar position (azimuth and elevation) by [http://www.ecy.wa.gov/programs/eap/models.html Greg Pelletier] {{Webarchive|url=https://web.archive.org/web/20070525051436/http://www.ecy.wa.gov/programs/eap/models.html |date=2007-05-25 }}, translated from [http://www.srrb.noaa.gov/highlights/sunrise/sunrise.html NOAA's online calculator for sunrise/sunset] {{Webarchive|url=https://web.archive.org/web/20110716145151/http://www.srrb.noaa.gov/highlights/sunrise/sunrise.html |date=2011-07-16 }}
* [http://www.spc.noaa.gov/publications/corfidi/sunset The colors of twilight and sunset] {{Webarchive|url=https://web.archive.org/web/20170923212827/http://www.spc.noaa.gov/publications/corfidi/sunset |date=2017-09-23 }}
* [http://websurf.nao.rl.ac.uk/ HM Nautical Almanac Office websurf] {{Webarchive|url=https://web.archive.org/web/20110714131844/http://websurf.nao.rl.ac.uk/ |date=2011-07-14 }} Compute twilight times.
* [http://www.ga.gov.au/ Geoscience Australia "Sunrise and sunset times"] {{Webarchive|url=https://web.archive.org/web/20140802030749/http://www.ga.gov.au/ |date=2014-08-02 }} Compute twilight times.
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