Now, you can also shine light through many equally spaced slits -- this called a diffraction grating.
现在,您还可以通过许多等 间距的狭缝照射光线——这称为衍射光栅。
单词 | Diffraction grating |
释义 |
Diffraction grating
原声例句
Crash Course Physics 速成课物理 Now, you can also shine light through many equally spaced slits -- this called a diffraction grating. 现在,您还可以通过许多等 间距的狭缝照射光线——这称为衍射光栅。 Crash Course Physics 速成课物理 But today, you learned about how to analyze the composition of a light source using diffraction grating and spectroscopy. 但是今天,您了解了如何使用衍射光栅和光谱分析光源的成分。 Crash Course Physics 速成课物理 To do that, you need a spectrometer, a tool that uses diffraction grating or a prism to separate the wavelengths. 为此,您需要一个光谱仪,一种使用衍射光栅或棱镜来分离波长的工具。 2022-2023-2 Academic Listening Then the dark, rich part of the flower has a diffraction grating, such as you'd find on a CD, in the center, overlying the center of the flower. 然后花的深色、丰富的部分有一个衍射光栅,就像你在 CD 上看到的那样,在中心,覆盖在花的中心。
中文百科
衍射光栅![]() ![]() ![]() ![]() 衍射光栅(diffraction grating)是光栅的一种。它通过有规律的结构,使入射光的振幅或相位(或两者同时)受到周期性空间调制。衍射光栅在光学上的最重要应用是作为分光器件,常被用于单色仪和光谱仪上。 实际应用的衍射光栅通常是在表面上有沟槽或刻痕的平板。这样的光栅可以是透射光栅或反射光栅。可以调制入射光的相位而不是振幅的衍射光栅现在也能生产。 衍射光栅的原理是苏格兰数学家詹姆斯·格雷戈里发现的,发现时间大约在牛顿的棱镜实验的一年后。詹姆斯·格雷戈里大概是受到了光线透过鸟类羽毛的启发。公认的最早的人造光栅是德国物理学家夫琅禾费在1821年制成的,那是一个极简单的金属丝栅网。但也有人争辩说费城发明家戴维·里滕豪斯于1785年在两根螺钉之间固定的几根头发才是世界上第一个人造光栅。
英语百科
Diffraction grating 衍射光栅![]() ![]() ![]() In optics, a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. The emerging coloration is a form of structural coloration. The directions of these beams depend on the spacing of the grating and the wavelength of the light so that the grating acts as the dispersive element. Because of this, gratings are commonly used in monochromators and spectrometers. |
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