cathode glow

简明释义

阴极光辉

英英释义

例句

1.In a vacuum tube, the cathode glow is essential for the functioning of the device.

在真空管中，阴极辉光对设备的运作至关重要。

2.The cathode glow appeared as a bluish light in the dark chamber.

在黑暗的房间里，阴极辉光呈现为蓝色光芒。

3.Observing the cathode glow can help determine the efficiency of the electron emission.

观察阴极辉光可以帮助确定电子发射的效率。

4.The experiment revealed a bright cathode glow, indicating that the gas was ionized.

实验显示出明亮的阴极辉光，这表明气体被电离了。

5.The technician adjusted the voltage to enhance the cathode glow during the calibration process.

在校准过程中，技术员调整电压以增强阴极辉光。

作文

The phenomenon known as cathode glow occurs in various types of gas discharge tubes and is a fascinating aspect of physics that illustrates the interaction between electric fields and gases. When an electric current passes through a low-pressure gas, the gas becomes ionized, leading to the emission of light. This process begins at the cathode, which is the negative electrode in the system. As electrons are emitted from the cathode due to thermionic emission or field emission, they collide with gas atoms, transferring energy and causing the atoms to become excited. When these excited atoms return to their ground state, they release energy in the form of light, creating what we observe as cathode glow (阴极辉光). In a typical setup, the cathode glow can be seen as a soft, luminous glow surrounding the cathode. This glow can vary in color depending on the type of gas used in the tube. For example, neon gas emits a bright red-orange light, while argon produces a pale blue hue. The colors arise from the specific energy transitions of the gas atoms and the wavelengths of light they emit. The study of cathode glow is not only important for understanding basic physical principles but also has practical applications. It plays a crucial role in the functioning of various devices such as cathode ray tubes (CRTs), which were once widely used in televisions and computer monitors. In these devices, the cathode glow contributes to the generation of images on the screen by directing electron beams onto a phosphorescent surface. Moreover, the principles behind cathode glow are foundational for modern technologies, including fluorescent lighting and plasma displays. These technologies rely on similar gas discharge processes to produce light. Understanding how cathode glow works allows scientists and engineers to innovate and improve lighting technologies, making them more efficient and environmentally friendly. In addition to its practical applications, cathode glow serves as a captivating demonstration of fundamental physics concepts such as ionization, excitation, and energy transfer. It provides a visual representation of the interactions between charged particles and neutral atoms, making it an excellent teaching tool in educational settings. Students can observe firsthand how electricity can transform a gas into a source of light, bridging the gap between theoretical knowledge and observable phenomena. In conclusion, cathode glow (阴极辉光) is a remarkable phenomenon that showcases the beauty of physics and its applications in technology. From its role in early electronic devices to its influence on modern lighting solutions, understanding cathode glow opens up a world of scientific inquiry and innovation. Whether in a classroom or a laboratory, the exploration of this phenomenon continues to inspire curiosity and advancement in the field of physics.

被称为阴极辉光的现象发生在各种类型的气体放电管中，是物理学的一个迷人方面，展示了电场与气体之间的相互作用。当电流通过低压气体时，气体变得电离，导致发光的产生。这个过程始于阴极，它是系统中的负电极。当电子由于热电子发射或场发射从阴极发射出来时，它们与气体原子碰撞，传递能量，使原子激发。当这些激发的原子返回到基态时，它们以光的形式释放能量，形成我们观察到的阴极辉光。在典型的设置中，阴极辉光可以被视为围绕阴极的柔和发光。根据所使用气体的类型，这种辉光的颜色可能会有所不同。例如，氖气发出明亮的红橙色光，而氩气则产生淡蓝色光。这些颜色源于气体原子的特定能量跃迁及其发出的光波长。对阴极辉光的研究不仅对理解基本物理原理重要，而且具有实际应用。它在各种设备的功能中发挥着关键作用，例如阴极射线管（CRT），曾广泛用于电视和计算机显示器。在这些设备中，阴极辉光有助于在屏幕上生成图像，通过将电子束指向磷光表面。此外，阴极辉光背后的原理是现代技术的基础，包括荧光照明和等离子显示器。这些技术依赖于类似的气体放电过程来产生光。理解阴极辉光的工作原理使科学家和工程师能够创新和改进照明技术，使其更加高效和环保。除了实际应用，阴极辉光作为基本物理概念的迷人演示，展示了电离、激发和能量转移等基本物理概念。它提供了带电粒子与中性原子之间相互作用的可视化表现，使其成为教育环境中的优秀教学工具。学生可以亲眼观察电力如何将气体转变为光源，缩小理论知识与可观察现象之间的差距。总之，阴极辉光（阴极辉光）是一种非凡的现象，展示了物理学的美丽及其在技术中的应用。从其在早期电子设备中的作用到对现代照明解决方案的影响，理解阴极辉光开启了科学探究和创新的世界。无论是在课堂上还是实验室中，对这一现象的探索继续激发着对物理领域的好奇心和进步。