衍射 Diffraction

（重定向自Diffract）

图示为温泉上方水蒸气中的光环现象。光环是一种光波被水气或尺寸不均匀的小水滴反向散射到其波源的光学现象，整个过程包含了衍射、反射和折射。

惠更斯原理的示意图：可以看出，狭缝处诸点光源作为次生光波的光源向各个方向发出光波。

绕射（英语：diffraction），又称衍射，是指波遇到障碍物时偏离原来直线传播的物理现象。

在古典物理学中，波在穿过狭缝、小孔或圆盘之类的障碍物后会发生不同程度的弯散传播。假设将一个障碍物置放在光源和观察屏之间，则会有光亮区域与阴晦区域出现于观察屏，而且这些区域的边界并不锐利，是一种明暗相间的复杂图样。这现象称为衍射，当波在其传播路径上遇到障碍物时，都有可能发生这种现象。除此之外，当光波穿过折射率不均匀的介质时，或当声波穿过声阻抗不均匀的介质时，也会发生类似的效应。在一定条件下，不仅水波、光波能够产生肉眼可见的衍射现象，其他类型的电磁波（例如X射线和无线电波等）也能够发生衍射。由于原子尺度的实际物体具有类似波的性质，它们也会表现出衍射现象，可以通过量子力学进行研究其性质。

单词	diffract
释义	diffract /dɪ'frækt/ 英汉-汉英词典 vt. 使(光)衍射时态: diffracted, diffracting, diffracts 形容词: diffractive 词组 \| 习惯用语您要查找的是不是： refractive adj. 折射的 fructify vt. 使结果实；使肥沃；富有成果 vi. 结果实；有成果 diffract vt. 衍射；使…分散；碾碎; vi. 衍射; diffracted beam 绕射射束；衍射射束 diffracted ray 衍射线，绕射线 diffracted wave 绕射波 single diffracting point 单点diffracting diffracting crystal spectrometer 衍射晶体光谱仪网络短语: diffract diffraction 衍射 diffracted error 衍射误差 diffracted loss 衍射损耗 beam diffracted 绕射射柱 diffracted effect 衍射效应 diffracted seafloor 绕射海底 x-ray diffract X射线衍射原声例句 Scishow 精选系列 And they use electron beams instead of light beams to visualize the image, which diffract a lot less. 它们使用电子束而不是光束来可视化图像，衍射要少得多。 Crash Course Physics 速成课物理 When these diffracted waves run into each other, they interfere. 当这些衍射波相互碰撞时，它们就会发生干涉。 Crash Course Physics 速成课物理 But when waves diffract, they often spread outward behind obstacles. 但是当波发生衍射时，它们通常会在障碍物后面向外扩散。 Crash Course Physics 速成课物理 At that point, the waves of light that diffracted around the edges of the coin have all traveled the same distance. 那时，围绕硬币边缘衍射的光波都传播了相同的距离。 Crash Course Physics 速成课物理 Since lenses have edges, the incoming rays will always diffract and produce slightly blurred images, even if the lens is perfectly crafted. . 由于镜头有边缘，即使镜头制作精良，入射光线也会始终衍射并产生略微模糊的图像。 Scishow 精选系列 If you try to zoom in more than that, the image will get blurry because of how light diffracts, or spreads out, when it hits an object. 如果你想要再进行放大的话，图像会变得模糊，因为当光击中物体时，它会衍射或扩散。中文百科衍射 Diffraction （重定向自Diffract）绕射（英语：diffraction），又称衍射，是指波遇到障碍物时偏离原来直线传播的物理现象。在古典物理学中，波在穿过狭缝、小孔或圆盘之类的障碍物后会发生不同程度的弯散传播。假设将一个障碍物置放在光源和观察屏之间，则会有光亮区域与阴晦区域出现于观察屏，而且这些区域的边界并不锐利，是一种明暗相间的复杂图样。这现象称为衍射，当波在其传播路径上遇到障碍物时，都有可能发生这种现象。除此之外，当光波穿过折射率不均匀的介质时，或当声波穿过声阻抗不均匀的介质时，也会发生类似的效应。在一定条件下，不仅水波、光波能够产生肉眼可见的衍射现象，其他类型的电磁波（例如X射线和无线电波等）也能够发生衍射。由于原子尺度的实际物体具有类似波的性质，它们也会表现出衍射现象，可以通过量子力学进行研究其性质。英语百科 Diffraction 衍射（重定向自Diffract） $Diffraction pattern of red laser beam made on a plate after passing a small circular hole in another plate$ $Solar glory at the steam from hot springs. A glory is an optical phenomenon produced by light backscattered (a combination of diffraction, reflection and refraction) towards its source by a cloud of uniformly sized water droplets.$ $Photograph of single-slit diffraction in a circular ripple tank$ $Numerical approximation of diffraction pattern from a slit of width equal to wavelength of an incident plane wave in 3D spectrum visualization$ Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit. It is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle. In classical physics, the diffraction phenomenon is described as the interference of waves according to the Huygens–Fresnel principle. These characteristic behaviors are exhibited when a wave encounters an obstacle or a slit that is comparable in size to its wavelength. Similar effects occur when a light wave travels through a medium with a varying refractive index, or when a sound wave travels through a medium with varying acoustic impedance. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible light, X-rays and radio waves. 近义、反义、联想词近义词 v. separate, part, split 联想词 diffraction衍射，绕射;photons光子;wavelength波长;diffuse散开的;waveguide波导管;crystals晶体;radiate传播;emit发出，放射;beam梁, 横梁;reflector反射镜;photon光子;
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diffract /dɪ'frækt/

您要查找的是不是：

网络短语:

衍射 Diffraction

Diffraction 衍射

近义词

联想词