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单词 critical angle
释义

critical angle

英汉-汉英词典
n. 临界角(物理,航空)
词组 | 习惯用语
您要查找的是不是:
    separation critical angle 临界分离角
    steep-dip critical angle 急斜临界角
    critical angle refractometry 临界角测折射率术
    Second critical angle 第二临界角;第二类临界角
    first critical angle 第一临界角
    critical angle refractomenter 临界角折射计
    critical angle refractometer 临界角折射计
    critical angle of refraction 临界折射角
    Third Sex critiical angle 第三临界角
critical angle n. [物][航] 临界角(物理,航空)
critical angle of attack 临界迎角
原声例句
CNN 10 学生英语 2019年3月合集

If the angle gets too big, if it exceeds a critical angle of attack a plane stalls.

如果角度变得太大,如果超过一个临界攻角,飞机就会失速。

中文百科

全内反射 Total internal reflection

(重定向自Critical Angle)
全内反射。
与法线的角度越大,光线折射的部份则越少,直至当大于临界角时,全内反射便会发生(图中光线的颜色只是作分别之用,并不表示不同颜色光线的光学情况。)
绿海龟和它的全内反射
Imagen ilustrando la reflexión interna total en un vidrio semicilíndrico de laboratorio.

全内反射,又称全反射英语:total reflection)是一种光学现象。当光线经过两个不同折射率的介质时,部份的光线会于介质的界面被折射,其余的则被反射。但是,当入射角比临界角大时(光线远离法线),光线会停止进入另一接口,反之会全部向内面反射。

这只会发生在当光线从光密介质(较高折射率的介质)进入到光疏介质(较低折射率的介质),入射角大于临界角时。因为没有折射(折射光线消失)而都是反射,故称之为全内反射。例如当光线从玻璃进入空气时会发生,但当光线从空气进入玻璃则不会。最常见的是沸腾的水中气泡显得十分明亮,就是因为发生了全内反射。

英语百科

Total internal reflection 全内反射

(重定向自Critical Angle)
The larger the angle to the normal, the smaller is the fraction of light transmitted rather than reflected, until the angle at which total internal reflection occurs. (The color of the rays is to help distinguish the rays, and is not meant to indicate any color dependence.)
Total internal reflection in a semi-circular acrylic block
 Refraction of light at the interface between two media, including total internal reflection.

Total internal reflection is a phenomenon which occurs when a propagating wave strikes a medium boundary at an angle larger than a particular critical angle with respect to the normal to the surface. If the refractive index is lower on the other side of the boundary and the incident angle is greater than the critical angle, the wave cannot pass through and is entirely reflected. The critical angle is the angle of incidence above which the total internal reflection occurs. This is particularly common as an optical phenomenon, where light waves are involved, but it occurs with many types of waves, such as electromagnetic waves in general or sound waves.

近义、反义、联想词
近义词
n.
angle of incidence, incidence angle

英英词典
critical angle n.
  1. the smallest angle of incidence for which light is totally reflected
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更新时间:2025/6/17 9:34:37