cathode glow

简明释义

阴板电辉

英英释义

例句

1.During the demonstration, the cathode glow was used to illustrate how electrons move in a vacuum.

在演示过程中，阴极辉光被用来说明电子如何在真空中移动。

2.The experiment revealed a bright cathode glow that indicated the presence of ionized gas.

实验显示出明亮的阴极辉光，这表明存在电离气体。

3.The presence of a cathode glow suggests that the vacuum within the tube is still intact.

出现阴极辉光表明管内的真空仍然完好无损。

4.The cathode glow can often be seen in old television sets, indicating the operation of the cathode ray tube.

在旧电视机中，常常可以看到阴极辉光，这表明阴极射线管的运行。

5.Scientists observed a faint cathode glow when they applied a high voltage across the electrodes.

科学家们在电极之间施加高压时观察到微弱的阴极辉光。

作文

In the realm of physics and electrical engineering, the term cathode glow refers to a phenomenon observed in vacuum tubes and gas discharge tubes. This effect occurs when electrons emitted from the cathode collide with gas molecules, causing them to ionize and emit light. The cathode glow is typically seen as a soft, luminous glow surrounding the cathode, which indicates that the tube is functioning correctly. Understanding this phenomenon is crucial for engineers and scientists who work with electronic devices, as it plays a significant role in the operation of various technologies, including television sets, radio transmitters, and computer monitors.The cathode glow is not just an interesting visual effect; it also serves as an indicator of the efficiency and performance of the device. When the glow is bright and stable, it signifies that the cathode is effectively emitting electrons and that the gas within the tube is adequately ionized. Conversely, a weak or flickering cathode glow could indicate potential issues such as a failing cathode or insufficient gas pressure, which can lead to device malfunctions.Historically, the discovery of the cathode glow phenomenon was pivotal in the development of early electronic technology. Scientists like Heinrich Hertz and J.J. Thomson conducted experiments that revealed the properties of cathodes and the behavior of electrons. Their work laid the groundwork for the invention of the vacuum tube, which revolutionized communication and entertainment industries by allowing for the amplification of electrical signals.In modern applications, the cathode glow is still relevant, particularly in certain types of displays and lighting technologies. For instance, cathode ray tubes (CRTs), once widely used in televisions and computer monitors, relied on this principle to produce images. Although CRTs have largely been replaced by flat-panel displays, understanding the cathode glow remains essential for those studying the history of electronics and the evolution of display technologies.Moreover, the cathode glow phenomenon is also explored in educational settings to teach students about electricity, magnetism, and gas laws. Demonstrations involving vacuum tubes can visually illustrate concepts such as electron flow, ionization, and the interaction between electric fields and charged particles. Such hands-on experiences can enhance students' comprehension and spark their interest in physics and engineering.In conclusion, the cathode glow is more than just a captivating visual element; it represents a fundamental principle in the field of electronics. Its significance extends from historical discoveries to modern applications and educational demonstrations. By understanding the cathode glow, we gain insights into the workings of electronic devices and the underlying principles that govern our technological world. As we continue to innovate and develop new technologies, the lessons learned from the cathode glow will undoubtedly influence future advancements in the field of electronics.

在物理学和电气工程的领域中，术语阴极光指的是在真空管和气体放电管中观察到的一种现象。当从阴极发射的电子与气体分子碰撞时，会导致气体分子电离并发出光。通常，阴极光表现为环绕阴极的柔和发光，这表明管子正常工作。理解这一现象对于从事电子设备工作的工程师和科学家至关重要，因为它在各种技术的运作中发挥着重要作用，包括电视机、无线电发射机和计算机显示器。阴极光不仅仅是一个有趣的视觉效果；它还作为设备效率和性能的指示器。当光芒明亮且稳定时，表明阴极有效地发射电子，并且管内气体得到充分电离。相反，微弱或闪烁的阴极光可能表明潜在的问题，例如阴极故障或气体压力不足，这可能导致设备故障。历史上，阴极光现象的发现对早期电子技术的发展至关重要。海因里希·赫兹和J.J.汤姆逊等科学家进行了实验，揭示了阴极的性质和电子的行为。他们的工作为真空管的发明奠定了基础，真空管通过放大电信号彻底改变了通信和娱乐行业。在现代应用中，阴极光仍然相关，特别是在某些类型的显示器和照明技术中。例如，曾广泛用于电视机和计算机显示器的阴极射线管（CRT）依赖这一原理来产生图像。尽管CRT已被平面显示器大幅取代，但理解阴极光对于研究电子历史和显示技术的发展仍然至关重要。此外，阴极光现象也在教育环境中被探索，以教导学生有关电力、磁性和气体法则的知识。涉及真空管的演示可以直观地说明电子流、电离以及电场与带电粒子之间的相互作用等概念。这种动手体验可以增强学生的理解，并激发他们对物理和工程的兴趣。总之，阴极光不仅仅是一个迷人的视觉元素；它代表了电子学领域的一个基本原理。其重要性从历史发现延伸到现代应用和教育演示。通过理解阴极光，我们可以深入了解电子设备的工作原理及其背后的基本原理，这些原理支配着我们的技术世界。随着我们继续创新和开发新技术，从阴极光中获得的经验教训无疑将影响电子领域未来的进步。