陽光的持久
The Persistence of Sunlight
來源：Lorenzo Busilacchi｜發表日期：2026-04-25
這片海濱日落帶來了一場超現實的體驗，畫面攝於地球義大利撒丁島西海岸的海天交界處。這幅達利風格的景象是由相機配合長焦鏡頭拍攝的一組連續曝光照片構成的。 不過，太陽並未融化。當它接近地平線時，其變幻流轉的外觀實則是視線方向上的折射發生變化所致，從而在通紅的太陽圓盤上產生了扭曲的影像或海市蜃樓。大氣折射的變化源於溫度和密度差異顯著的大氣層。另一種由視線與落日（或日出）之間長距離造成的、著名卻轉瞬即逝的大氣折射現象，通常被稱為“綠光”。
原文：This seaside sunset offered a surreal experience, captured in a sea and skyscape from the west coast of Sardinia, Italy, planet Earth. The Daliesque scene is a composition of sequential exposures made with a camera and long telephoto lens. The Sun is not melting, though. Its shifting and fluid appearance as it nears the horizon is caused as refraction along the line of sight changes and creates distorted images or mirages of the reddened solar disk. The changes in atmospheric refraction correspond to atmospheric layers with sharply different temperatures and densities. Another famous but fleeting effect of atmospheric refraction produced by a long sight-line to the setting (or rising) Sun is often called the green flash.
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。