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anaclastic
anaclastic, a. and n. (ænəˈklɑːstɪk, -æ-) [f. Gr. ἀνάκλαστ-ος refracted (f. ἀνα-κλά-ειν to refract, bend back, f. κλά-ειν to break) + -ic.] A. adj. 1. Optics. Pertaining to refraction; produced by refraction through a medium of different density.1796 Hutton Math. Dict., Anaclastic Curves, a name giv...
Oxford English Dictionary
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Anaclastic
Anaclastic may refer to:
Anaclastic lens
Anaclasis (poetry)
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anaclasis
‖ anaclasis Pros. (əˈnækləsɪs) Also -klasis. Pl. -ases. [mod.L., a. Gr. ἀνάκλασις bending back (see anaclastic a.).] In Ionic verse: an interchange of the final long syllable of the first metron with the opening short syllable of the second.1784 J. B. Seale Anal. Gr. Metres 25 In the intermediate pl...
Oxford English Dictionary
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Anaclasis (poetry)
Elwell-Sutton, fully two-thirds of lyric poems in classical Persian are in the ionic rhythm or one of its two anaclastic forms. Although these two metres are never used together in the same poem, it has been suggested that one is an anaclastic form of the other.
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Anacreontics
It has been suggested that the anacreontic in its origin may be an "anaclastic" variant of the Ionic dimeter (u u – – u u – –), i.e. an ionic dimeter with
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Glyconic
is sometimes found in the glyconic metre itself, as appears from the Euripides example below:
x x – u | u – u – (normal glyconic)
uu u – – | – u u – (anaclastic
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curve
▪ I. curve, a. and n. (kɜːv) [ad. L. curv-us bending, bent, curved, crooked.] A. adj. Curved. Now rare.1571 Digges Pantom. ii. xiii. N iij b, Suche playne Superficies as are enuironed with curue lynes. 1665 Phil. Trans. I. 107 The Tail is Curve. 1716 Cheyne Philos. Princ. Relig. i. 95 Partly termina...
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Ibn Sahl (mathematician)
Ibn Sahl uses this law to derive lens shapes that focus light with no geometric aberrations, known as anaclastic lenses.
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Aspheric lens
History
Ibn sahl, a 10th century Arab physicist figured out that a combination of spherical and parabolic surfaces, which is now known as anaclastic lens
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斯涅尔定律
这种透镜称为曲折透镜(anaclastic lens)。很可惜的是其它学者并没有注意到他的研究结果。之后很多年,人们都是从托勒密的错误理论开始研究折射。
十一世纪初,阿拉伯学者海什木重做托勒密的实验。
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Physics in the medieval Islamic world
He used this law to work out the shapes of lenses that focus light with no geometric aberrations, known as anaclastic lenses.
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光学史
这种透镜称为曲折透镜(anaclastic lens)。可惜其他学者并没有注意到他的研究结果。
11世纪初,阿拉伯学者海什木重做托勒密的折射实验。他在著作《》(Kitab al-Manazir)里,从重做实验得到的数据,粗略地总结出一些定则,他也没有得到正弦定律。
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Ionic meter
Anaclastic versions of the metre also exist, resembling the Greek anacreontic, for example:
u u – u – u – – | u u – u – u – –
From its name persicos
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Sotadean metre
– – || (u) u – u – (u) – –
"If looking is forbidden, I have plenty of sin"
Most Persian poems use a single metre throughout, without mixing pure and anaclastic
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