翻訳と辞書 Words near each other ・ Light oil ・ Light On ・ Light On (album) ・ Light On (disambiguation) ・ Light On (Rebecca Ferguson song) ・ Light Opera of Manhattan ・ Light Opera Works ・ Light organ ・ Light Organ Records ・ Light Out of Darkness (A Tribute to Ray Charles) ・ Light painting ・ Light Painting World Alliance ・ Light Pass, South Australia ・ Light Peace Love ・ Light pen ・ Light pillar ・ Light plot ・ Light poetry ・ Light Poles and Pine Trees ・ Light pollution ・ Light pollution in Hong Kong ・ Light Pupil Dilate ・ Light rail ・ Light Rail (Hong Kong) ・ Light Rail Depot Stop ・ Light rail in Auckland ・ Light rail in Canada ・ Light rail in New Jersey ・ Light rail in North America ・ Light rail in Sydney Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Light pillar ： ウィキペディア英語版 Light pillar A light pillar is an atmospheric optical phenomenon in the form of a vertical column of light which appears to extend above and/or below a light source. The effect, sometimes also called the crystal beam phenomenon, is created by the reflection of light from numerous tiny ice crystals suspended in the atmosphere or clouds. The light can come from the Sun (usually when it is near or even below the horizon) in which case the phenomenon is called a sun pillar or solar pillar. It can also come from the Moon or from terrestrial sources such as streetlights.〔http://apod.nasa.gov/apod/ap131218.html〕 ==Formation== Since they are caused by the interaction of light with ice crystals, light pillars belong to the family of halos. The crystals responsible for light pillars usually consist of flat, hexagonal plates, which tend to orient themselves more or less horizontally as they fall through the air. Their collective surfaces act as a giant mirror, which reflects the light source upwards and/or downwards into a virtual image. As the crystals are disturbed by turbulence, the angle of their surfaces deviates some degrees from the horizontal orientation, causing the reflection (i.e. the light pillar) to become elongated into a column. The larger the crystals, the more pronounced this effect becomes. More rarely, column-shaped crystals can cause light pillars as well.〔http://www.atoptics.co.uk/halo/colpill.htm〕 Unlike a light beam, a light pillar is not physically located above or below the light source. Its appearance of a vertical column is an optical illusion, resulting from the collective reflection off the ice crystals, only those of which that appear to lie in a vertical line direct the light rays towards the observer (similar to the reflection of a light source in a body of water).〔http://www.atoptics.co.uk/halo/lpil.htm〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Light pillar」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.