折射 Refraction

（重定向自Refractive）

折射（英语：refraction），一种常见的物理现象，意指当物体或波动由一种媒介斜射入另一种媒介造成速度改变而引起角度上的偏移。「折射」不一定等同于「光的折射」，所以虽然光线（一种横波）会因为「折射率」的不同令光的运行方向改变，但「折射」现象并不能用以证明光线是一种波动。最普遍的例子就是用手枪瞄准，当子弹穿过水时，其角度就会因为折射而偏移。

而所谓的「屈折」，也就是「光的折射」，专指光从一种介质进入另一种具有不同折射率之介质，或者在同一种介质中折射率不同的部分运行时，由于波速的差异，使光的运行方向改变的现象。例如当一条木棒插在水里面时，单用肉眼看会以为木棒进入水中时折曲了，这是光进入水里面时，产生折射，才带来这种效果。

Refraction 折射

（重定向自Refractive）

$Light on air–plexi surface in this experiment undergoes refraction (lower ray) and reflection (upper ray).$

$Refraction in a glass of water. The image is flipped.$

$An image of the Golden Gate Bridge is refracted and bent by many differing three-dimensional drops of water.$

$Refraction of light at the interface between two media of different refractive indices, with n2 > n1. Since the phase velocity is lower in the second medium (v2 < v1), the angle of refraction θ2 is less than the angle of incidence θ1; that is, the ray in the higher-index medium is closer to the normal.$

Refraction is the change in direction of propagation of a wave due to a change in its transmission medium.

The phenomenon is explained by the conservation of energy and the conservation of momentum. Due to the change of medium, the phase velocity of the wave is changed but its frequency remains constant. This is most commonly observed when a wave passes from one medium to another at any angle other than 0° from the normal. Refraction of light is the most commonly observed phenomenon, but any type of wave can refract when it interacts with a medium, for example when sound waves pass from one medium into another or when water waves move into water of a different depth. Refraction is described by Snell's law, which states that, for a given pair of media and a wave with a single frequency, the ratio of the sines of the angle of incidence θ₁ and angle of refraction θ₂ is equivalent to the ratio of phase velocities (v₁ / v₂) in the two media, or equivalently, to the opposite ratio of the indices of refraction (n₂ / n₁):

单词	refractive
释义	refractive /rɪ'fræktɪv/ 英汉-汉英词典 adj. 折射的词组 \| 习惯用语 refractive index 折射率，折光率 refractive error 屈光不正；折射误差 refractive power 折光力；折射本领英语例句库 Efficacy measures include axial length， keratometric power and mean absolute refractive error. 有效测量值包括眼轴长度，角膜曲率和绝对屈光误差值等内容。 In this thesis, the plane wave expansion method is used to get the equifrequency surface.The anomalous refractive properties of photonic crystal are analyzed by using the equifrequency surface. 中文摘要光子晶体是由周期性结构所组成的结构，假若经由适度的设计则具备改变光波传递的效果。 Using the characteristic of refractive index are smaller than 1 in the reststrahlen band,we can produce photonic crystal having forbidden band in the middle infrared and far infrared. 由此可知利用材料在剩余射线带内折射率小于1的特性，我们可以制备出中红外区和远红外区存在禁带的光子晶体。 Incorporating array of metallic wires into the host media, such as ferrimagnet YIG under an external magnetic bias field, is a novel method to synthesize negative refractive index (NRI) material. 摘要以亚铁磁煤质-YIG为基体，在其中嵌入金属导体线阵列是人工合成负折射率微波媒质的一种新方法。声明：以上例句、词性分类均由互联网资源自动生成，未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。原声例句中级英语短文 The major problems are refractive errors like myopia and astigmatism. 主要问题是近视和散光等屈光不正。日常生活医学科普 Key features This refractive error has three key features: Image is formed behind the retina. 关键特征这种屈光不正有三个主要特征：图像在视网膜后面形成。经济学人-科技 This substance has a high refractive index, meaning the speed of light passing through it is greatly reduced. 这种物质的折射率很高，意味着光穿过它的速度会大幅降低。日常生活医学科普 This is also the reason why we use cycloplegic or muscle paralyzing drops before estimating the amount of refractive error. 这也是我们在测量屈光不正之前使用睫状肌麻痹或肌肉麻痹眼药水的原因。 TED-Ed（视频版） Glasses and contact lenses bend light to compensate for these refractive errors. 眼镜和隐形眼镜会弯曲光线以补偿这些屈光不正。双语版 TED-Ed 演讲精选 But many people develop refractive errors, either during childhood as their eyes are growing, or in later life as their eyes age. 但是很多人产生了屈光不正。或是发生在孩童时期当他们眼睛成长时，或是在后期当他们的眼睛变老的时候。 TED-Ed（视频版） Keratomileusis corrects what are called refractive errors: imperfections in the way the eye focuses incoming light. 角膜磨镶术可以纠正所谓的屈光不正：眼睛聚焦入射光的方式存在缺陷。 TED-Ed（视频版） It's even possible to correct vision with surgery using lasers that change the shape of the cornea and alter its refractive properties. 甚至可以通过外科手术来矫正视力通过激光来改变角膜的形状和改变它的折光特性。 TED-Ed（视频版） People with refractive errors can still see color, movement, and light, but the details of what they're looking at are out of focus. 有屈光不正的人仍然能够看到颜色，移动，和光，但是他们正在的看的细节是模糊不清的。日常生活医学科普 Diagnosis Retinoscopy: a hand-held device that throws light in the eye and allowing us to observe its movements and reflection, hence helping to confirm the refractive error. 一种手持设备，向眼睛投射光线，观察眼睛的运动和反射，从而帮助确认屈光不正。中文百科折射 Refraction （重定向自Refractive）折射（英语：refraction），一种常见的物理现象，意指当物体或波动由一种媒介斜射入另一种媒介造成速度改变而引起角度上的偏移。「折射」不一定等同于「光的折射」，所以虽然光线（一种横波）会因为「折射率」的不同令光的运行方向改变，但「折射」现象并不能用以证明光线是一种波动。最普遍的例子就是用手枪瞄准，当子弹穿过水时，其角度就会因为折射而偏移。而所谓的「屈折」，也就是「光的折射」，专指光从一种介质进入另一种具有不同折射率之介质，或者在同一种介质中折射率不同的部分运行时，由于波速的差异，使光的运行方向改变的现象。例如当一条木棒插在水里面时，单用肉眼看会以为木棒进入水中时折曲了，这是光进入水里面时，产生折射，才带来这种效果。英语百科 Refraction 折射（重定向自Refractive） $Light on air–plexi surface in this experiment undergoes refraction (lower ray) and reflection (upper ray).$ $Refraction in a glass of water. The image is flipped.$ $An image of the Golden Gate Bridge is refracted and bent by many differing three-dimensional drops of water.$ $Refraction of light at the interface between two media of different refractive indices, with n2 > n1. Since the phase velocity is lower in the second medium (v2 < v1), the angle of refraction θ2 is less than the angle of incidence θ1; that is, the ray in the higher-index medium is closer to the normal.$ Refraction is the change in direction of propagation of a wave due to a change in its transmission medium. The phenomenon is explained by the conservation of energy and the conservation of momentum. Due to the change of medium, the phase velocity of the wave is changed but its frequency remains constant. This is most commonly observed when a wave passes from one medium to another at any angle other than 0° from the normal. Refraction of light is the most commonly observed phenomenon, but any type of wave can refract when it interacts with a medium, for example when sound waves pass from one medium into another or when water waves move into water of a different depth. Refraction is described by Snell's law, which states that, for a given pair of media and a wave with a single frequency, the ratio of the sines of the angle of incidence θ₁ and angle of refraction θ₂ is equivalent to the ratio of phase velocities (v₁ / v₂) in the two media, or equivalently, to the opposite ratio of the indices of refraction (n₂ / n₁): 近义、反义、联想词近义词 adj. refraction, crooked 反义词 n. straight 联想词 corneal角膜的;optical光学的;cornea角膜;ocular眼睛的;cataract大瀑布;prism棱柱;dispersion散布;wavelength波长;index指数;polarization极化;dielectric电介质;
随便看	main conveyor的意思 main conveyor roadway的意思 main convoy的意思 main coolant的意思 main coolant pipe的意思 main coolant pump的意思 main coolant system的意思 main cooling flow的意思 main coordinate的意思 main cord的意思 Main Core的意思 main coronary artery的意思 main couple的意思 main coupling的意思 main course的意思 main course的意思 main crab的意思 main crank的意思 main crank case的意思 main crank pin的意思 Main Crater的意思 main crop的意思 maincrop的意思 main crop culture的意思 maincrops的意思

refractive /rɪ'fræktɪv/

折射 Refraction

Refraction 折射

近义词

反义词

联想词