| Information | |
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| has gloss | eng: In optics, a dispersive prism is a type of optical prism, normally having the shape of a geometrical triangular prism. It is the most widely-known type of optical prism, although perhaps not the most common in actual use. Triangular prisms are used to disperse light, that is to break light up into its spectral components (the colors of the rainbow). This dispersion occurs because the angle of refraction is dependent on the refractive index a certain material which in turn is slightly dependent on the wavelength of light that is travelling through it. This means that different wavelengths of light will travel at different speeds and so the light will disperse into the colours of the visible spectrum, with lower wavelengths (red, yellow) being refracted less than higher wavelengths (violet, blue). |
| lexicalization | eng: dispersive prism |
| instance of | (noun) optical device having a triangular shape and made of glass or quartz; used to deviate a beam or invert an image optical prism, prism |
| Meaning | |
|---|---|
| Arabic | |
| has gloss | ara: الموشور أو المنشور : في علم البصريات، أو أحد أنواع المواشير البصرية، له عادة شكل الموشور المثلثي الفراغي. وهو النوع الأكثر شهرة من الموشورات البصرية، بالرغم من أنه قد لايكون الأكثر استخدامًا. يستخدم الموشور المثلثي لتشتيت الضوء، بحيث يتحلل إلى عناصره الطيفية. يحدث هذا التشتيت بسبب تعلق زاوية الانكسار بمعامل الانكسار، والذي بدوره يتعلق بطول الموجة. ويستخدم الموشور أيضًا لقياس معامل الانكسار لمادة الموشور وبدقة تامة. |
| lexicalization | ara: موشور مشتت |
| Italian | |
| has gloss | ita: In ottica un prisma triangolare è un tipo di prisma ottico che ha la forma di un prisma triangolare. È il tipo di prisma più conosciuto, nonostante non sia il più utilizzato attualmente. I prismi triangolari sono usati per dividere la luce nelle sue componenti spettrali. Questa dispersione avviene perché langolo di rifrazione dipende dallindice di rifrazione che dipende dalla lunghezza donda. Questo effetto può essere anche usato per misurare lindice di rifrazione del materiale del prisma con unalta accuratezza. In una tale misura, il prisma è posto al centro del supporto rotante di uno spettrometro con il raggio di luce indicente disposto in un modo tale che il raggio rifratto sia alla deviazione minima. Lindice di rifrazione può essere calcolato dallangolo al vertice e langolo di deviazione minima. |
| lexicalization | ita: prisma triangolare |
| Chinese | |
| has gloss | zho: 三稜鏡是光學稜鏡中的一種形式，在外觀上呈現幾何的三角形，是光學稜鏡中最常見，也是一般人所熟知的，但並不是最常用到的稜鏡。三稜鏡最常用於光線的色散，這是將光線分解成為不同的光譜成分。利用不同波長的光線因為折射率不同，在折射時會偏轉不同的角度，便會造成色散的現象。這種效應也被用來對稜鏡物質進行高精密度的折射系數測量。 |
| lexicalization | zho: 三稜鏡 |
| Media | |
|---|---|
| media:img | Dispersion prism.jpg |
| media:img | Dispersive Prism Illustration by Spigget.jpg |
| media:img | Light through prism.jpg |
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