翻訳と辞書 Words near each other ・ Spherium ・ Sphero ・ Spherocobaltite ・ Spherocytosis ・ Spheroid ・ Spheroid Hill ・ Spheroidal wave equation ・ Spheroidal wave function ・ Spheroidal weathering ・ Spheroidene monooxygenase ・ Spheromak ・ Spherometer ・ Spheroolithus ・ Spheroplast ・ Spherosome ・ Spherulite ・ Spherulite (polymer physics) ・ Spheterista ・ Spheterista argentinotata ・ Spheterista cassia ・ Spheterista flavocincta ・ Spheterista flavopicta ・ Spheterista fulva ・ Spheterista glaucoviridana ・ Spheterista infaustana ・ Spheterista ochreocuprea ・ Spheterista oheoheana ・ Spheterista pernitida ・ Spheterista pleonectes ・ Spheterista pterotropiana 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 Spherulite ： ウィキペディア英語版 Spherulite In petrology, spherulites are small, rounded bodies that commonly occur in vitreous igneous rocks. They are often visible in specimens of obsidian, pitchstone and rhyolite as globules about the size of millet seed or rice grain, with a duller luster than the surrounding glassy base of the rock, and when they are examined with a lens they prove to have a radiate fibrous structure. ==Structure== Under the microscope the spherulites are of circular outline and are composed of thin divergent fibers that are crystalline as verified with polarized light. Between crossed Nicols, a black cross appears in the spherulite; its axes are usually perpendicular to one another and parallel to the crosshairs; as the microscope stage is rotated the cross remains steady; between the black arms there are four bright sectors. This shows that the spherulite consists of radiate, doubly refracting fibers that have a straight extinction; the arms of the black cross correspond to those fibers that are extinguished. The aggregate is too fine-grained to directly determine what minerals it is composed of using visible light microscopy. 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「Spherulite」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.