critical angle

简明释义

临界角

英英释义

例句

1.When light passes from air into water, it reaches a critical angle 临界角 at which total internal reflection occurs.

当光从空气进入水中时，它达到一个critical angle 临界角，在此角度下发生全反射。

2.The critical angle 临界角 for diamond is much higher than for glass, making diamonds sparkle more.

钻石的critical angle 临界角远高于玻璃，使得钻石更加闪耀。

3.In optical fibers, the critical angle 临界角 is essential for maintaining signal integrity.

在光纤中，critical angle 临界角对保持信号完整性至关重要。

4.Understanding the critical angle 临界角 helps in designing better lenses for cameras.

理解critical angle 临界角有助于设计更好的相机镜头。

5.During the experiment, we calculated the critical angle 临界角 to determine the refractive index of the material.

在实验中，我们计算了critical angle 临界角以确定材料的折射率。

作文

The phenomenon of light refraction is a fascinating subject in the field of physics. One of the most intriguing aspects of this phenomenon is the concept of the critical angle. The critical angle is defined as the angle of incidence above which total internal reflection occurs when light travels from a denser medium to a less dense medium. This principle is not only essential in understanding how light behaves but also has practical applications in various technologies, including fiber optics and optical instruments.When light passes through different mediums, such as air and water, it changes speed and direction. As the angle of incidence increases, the refracted angle also changes according to Snell's Law. However, there comes a point where the refracted light can no longer exit the denser medium; instead, it reflects back entirely. This specific angle is what we refer to as the critical angle.To illustrate this concept, let’s consider an example involving water and air. When light travels from water (a denser medium) to air (a less dense medium), it bends away from the normal line. The critical angle for water to air is about 48.6 degrees. If the angle of incidence exceeds this value, the light will not refract into the air but will instead reflect back into the water, demonstrating total internal reflection.Understanding the critical angle is crucial in various fields, particularly in telecommunications. Fiber optic cables utilize the principle of total internal reflection to transmit light signals over long distances with minimal loss. The design of these cables ensures that light entering at angles greater than the critical angle remains trapped within the cable, allowing for efficient data transmission.In addition to telecommunications, the critical angle has applications in medical imaging and other optical devices. For instance, endoscopes, which are used for internal examinations in medicine, rely on the manipulation of light at specific angles to capture clear images of internal organs. The understanding of the critical angle allows engineers and scientists to design these instruments effectively.Moreover, the critical angle is not just limited to light; it can also be applied to sound waves and other types of waves. In acoustics, understanding the angles at which sound reflects and refracts can help in designing auditoriums and concert halls to enhance sound quality.In conclusion, the critical angle is a fundamental concept in physics that explains the behavior of light as it transitions between different mediums. Its implications extend far beyond theoretical physics, influencing modern technology and engineering. By mastering the understanding of the critical angle, we can harness the power of light and sound in innovative ways, leading to advancements that significantly impact our daily lives. The exploration of this concept opens doors to numerous possibilities in both scientific research and practical applications, emphasizing the importance of continued study in the field of optics and wave phenomena.

光的折射现象是物理学领域中一个引人入胜的主题。这一现象中最令人着迷的方面之一就是“临界角”的概念。“临界角”被定义为当光从一种更密集的介质进入一种较少密集的介质时，发生全内反射的入射角。这个原理不仅对理解光的行为至关重要，而且在包括光纤和光学仪器在内的各种技术中具有实际应用。当光通过不同的介质，例如空气和水时，它的速度和方向会发生变化。随着入射角的增加，折射角也会根据斯涅尔定律发生变化。然而，有一个点，折射光再也无法从密集介质中逸出；相反，它将完全反射回来。这个特定的角度就是我们所称的“临界角”。为了说明这一概念，让我们考虑一个涉及水和空气的例子。当光从水（密集介质）传播到空气（较少密集介质）时，它会朝着法线方向弯曲。“临界角”对于水到空气约为48.6度。如果入射角超过这个值，光将不会折射到空气中，而是会反射回水中，展示了全内反射。了解“临界角”在各个领域都是至关重要的，尤其是在电信领域。光纤电缆利用全内反射的原理，以最小的损失在长距离上传输光信号。这些电缆的设计确保以大于“临界角”的角度进入的光保持在电缆内部，从而实现高效的数据传输。除了电信，“临界角”在医学成像和其他光学设备中也有应用。例如，用于内部检查的内窥镜依赖于在特定角度操控光以捕捉内部器官的清晰图像。理解“临界角”使工程师和科学家能够有效地设计这些仪器。此外，“临界角”不仅限于光，它还可以应用于声波和其他类型的波。在声学中，理解声音反射和折射的角度可以帮助设计音乐厅和演唱会厅，以增强音质。总之，“临界角”是物理学中的一个基本概念，解释了光在不同介质之间转变时的行为。它的影响远远超出了理论物理，影响着现代技术和工程。通过掌握对“临界角”的理解，我们可以以创新的方式利用光和声音的力量，推动显著影响我们日常生活的进步。对这一概念的探索为科学研究和实际应用开辟了无数可能性，强调了在光学和波现象领域继续研究的重要性。