incandescent cathode

简明释义

炽热阴极

英英释义

例句

1.The scientist explained how the incandescent cathode 白炽阴极 emits electrons when heated.

科学家解释了如何在加热时发出电子的 白炽阴极。

2.The incandescent cathode 白炽阴极 in this lamp provides a warm glow.

这盏灯中的 白炽阴极 发出温暖的光芒。

3.In old vacuum tubes, the incandescent cathode 白炽阴极 was essential for signal amplification.

在旧的真空管中，白炽阴极 对于信号放大至关重要。

4.The efficiency of the incandescent cathode 白炽阴极 can greatly affect the performance of the device.

白炽阴极 的效率会极大影响设备的性能。

5.Engineers are researching new materials to improve the lifespan of the incandescent cathode 白炽阴极.

工程师们正在研究新材料以提高 白炽阴极 的使用寿命。

作文

The concept of an incandescent cathode plays a crucial role in understanding the principles of thermionic emission and its applications in various fields of science and technology. An incandescent cathode refers to a type of cathode that emits electrons when heated to a high temperature, causing it to glow or become incandescent. This phenomenon is primarily observed in vacuum tubes and certain types of electron guns, where the emission of electrons is essential for the functioning of these devices.To comprehend the significance of an incandescent cathode, one must first delve into the basics of thermionic emission. When a material is heated, the thermal energy provided to its electrons can overcome the work function of the material, which is the minimum energy required to remove an electron from the surface. As a result, when the cathode reaches a sufficiently high temperature, electrons are emitted into the surrounding vacuum. This process is not only fundamental to the operation of vacuum tubes but also has implications in fields such as electronics, physics, and materials science.In practical applications, the incandescent cathode is often made from materials with low work functions, such as tungsten or barium oxide. These materials are chosen for their ability to emit electrons efficiently when heated. The design and construction of the cathode are critical because they must withstand high temperatures while maintaining structural integrity. The emitted electrons can then be directed towards an anode, creating a flow of current that can be harnessed for various purposes.Historically, the development of the incandescent cathode was pivotal in the evolution of electronic devices. The invention of the vacuum tube in the early 20th century revolutionized communication technologies, enabling the amplification of signals and the development of radio and television. The incandescent cathode served as a key component in these devices, allowing for the manipulation of electrical signals in ways that were previously unimaginable.As technology progressed, the principles behind the incandescent cathode paved the way for the development of modern electronics. While vacuum tubes have largely been replaced by transistors and integrated circuits, the underlying physics of thermionic emission continues to inform advancements in electron microscopy, particle accelerators, and even certain types of lasers. Understanding the behavior of an incandescent cathode allows scientists and engineers to innovate and improve upon existing technologies.In conclusion, the incandescent cathode is more than just a technical term; it represents a fundamental principle in the field of electronics and physics. Its ability to emit electrons through thermionic emission has had a lasting impact on technological advancements. By studying the properties and applications of an incandescent cathode, we gain insight into the evolution of electronic devices and the ongoing innovations that continue to shape our world. As we move forward, the lessons learned from the study of incandescent cathodes will undoubtedly inspire future generations of scientists and engineers to explore new frontiers in technology and materials science.

“白热阴极”这一概念在理解热电子发射的原理及其在科学和技术各个领域的应用中起着至关重要的作用。白热阴极指的是一种在加热到高温时会发射电子的阴极，导致它发光或变得白炽。这一现象主要出现在真空管和某些类型的电子枪中，其中电子的发射对于这些设备的功能至关重要。要理解“白热阴极”的重要性，首先必须深入了解热电子发射的基本原理。当材料被加热时，提供给其电子的热能可以克服材料的功函数，即从表面去除电子所需的最小能量。因此，当阴极达到足够高的温度时，电子就会被发射到周围的真空中。这个过程不仅是真空管操作的基础，而且在电子学、物理学和材料科学等领域也具有重要意义。在实际应用中，“白热阴极”通常由低功函数的材料制成，例如钨或氧化钡。这些材料因其在加热时能够高效发射电子而被选中。阴极的设计和构造至关重要，因为它们必须承受高温，同时保持结构完整性。发射的电子随后可以被引导到阳极，形成电流流动，可用于各种目的。历史上，“白热阴极”的发展对电子设备的演变至关重要。20世纪初真空管的发明彻底改变了通信技术，使信号放大成为可能，并推动了无线电和电视的发展。“白热阴极”作为这些设备的关键组成部分，使得以往无法想象的方式操控电信号成为可能。随着技术的进步，围绕“白热阴极”的原理为现代电子设备的发展铺平了道路。尽管真空管在很大程度上被晶体管和集成电路取代，但热电子发射的基本物理仍然影响着电子显微镜、粒子加速器，甚至某些类型激光器的进步。理解“白热阴极”的行为使科学家和工程师能够创新并改进现有技术。总之，“白热阴极”不仅仅是一个技术术语；它代表了电子学和物理学领域的一个基本原理。它通过热电子发射发射电子的能力对技术进步产生了持久的影响。通过研究“白热阴极”的特性和应用，我们可以深入了解电子设备的演变以及持续塑造我们世界的创新。随着我们向前发展，从“白热阴极”的研究中获得的经验教训无疑将激励未来一代科学家和工程师探索技术和材料科学的新前沿。