glow current

简明释义

辉光电流

英英释义

例句

1.The LED bulb operates at a low glow current to ensure energy efficiency.

LED灯泡在低发光电流下运行，以确保能效。

2.The technician measured the glow current to troubleshoot the lighting issue.

技术人员测量了发光电流以排查照明问题。

3.To achieve the desired brightness, we need to adjust the glow current in the circuit.

为了达到所需的亮度，我们需要调整电路中的发光电流。

4.The glow current for neon lights is typically lower than that of incandescent bulbs.

霓虹灯的发光电流通常低于白炽灯泡。

5.By reducing the glow current, we can extend the lifespan of the light source.

通过减少发光电流，我们可以延长光源的使用寿命。

作文

In the realm of electrical engineering, various terms are used to describe different phenomena and behaviors of electrical components. One such term that often comes up is glow current, which refers to the small amount of electric current that passes through a gas or a vacuum, causing it to emit light. This phenomenon is particularly significant in devices like gas discharge lamps and neon signs, where the glow current is essential for the operation of the device. Understanding glow current can help us appreciate how these devices work and the principles behind them.The concept of glow current is rooted in the behavior of gases when subjected to an electric field. When a sufficient voltage is applied across a gas, it ionizes the gas molecules, creating free electrons and positive ions. These charged particles can then move freely, allowing a small current to flow. As the electrons collide with the gas atoms, they transfer energy, which excites the atoms and causes them to emit photons, resulting in the characteristic glow. This process is not only fascinating but also showcases the interplay between electricity and light.One of the most common applications of glow current is in neon lighting. Neon signs are widely recognized for their bright and colorful displays, which are achieved by passing a glow current through neon gas contained in glass tubes. The glow current ionizes the neon gas, producing a vibrant orange-red light. By using different gases or phosphor coatings, manufacturers can create a wide range of colors, making neon signs a popular choice for advertising and artistic installations.Another area where glow current plays a crucial role is in cathode ray tubes (CRTs), which were once the standard display technology for televisions and computer monitors. In CRTs, a glow current is used to generate images on the screen. The tube contains a vacuum, and an electron gun emits a stream of electrons towards the phosphorescent screen. As these electrons strike the screen, they excite the phosphor coating, resulting in a visible glow. This technology has largely been replaced by modern LCD and LED displays, but understanding glow current provides insight into the evolution of display technologies.Moreover, glow current is not limited to just neon signs and CRTs; it can also be observed in various scientific applications. For instance, in gas discharge experiments, scientists often utilize glow current to study the behavior of gases under different conditions. By manipulating the voltage and pressure, researchers can observe changes in the glow, which can provide valuable data about the properties of the gas and its interactions with electric fields.In conclusion, the term glow current encapsulates a fascinating aspect of electrical engineering that bridges the gap between electricity and light. From neon signs to cathode ray tubes, the applications of glow current are diverse and impactful. By exploring this concept further, we can gain a deeper appreciation for the underlying principles of many devices we encounter in our daily lives. Understanding glow current not only enhances our knowledge of electrical phenomena but also inspires curiosity about the science behind the technology that illuminates our world.

在电气工程领域，各种术语被用来描述电气元件的不同现象和行为。其中一个常见的术语是发光电流，它指的是通过气体或真空流动的小量电流，导致其发出光。这一现象在气体放电灯和霓虹灯等设备中尤为重要，其中发光电流对于设备的运行至关重要。理解发光电流可以帮助我们欣赏这些设备的工作原理及其背后的原理。发光电流的概念根植于气体在电场作用下的行为。当施加足够的电压时，气体中的分子会被电离，产生自由电子和正离子。这些带电粒子可以自由移动，从而使小电流得以流动。当电子与气体原子碰撞时，它们会转移能量，使原子激发并发射光子，从而产生特有的光辉。这一过程不仅令人着迷，而且展示了电与光之间的相互作用。发光电流最常见的应用之一是霓虹灯。霓虹灯因其明亮多彩的显示效果而广受欢迎，这一效果是通过将发光电流通过封闭在玻璃管中的氖气来实现的。发光电流电离氖气，产生鲜艳的橙红色光。通过使用不同的气体或荧光涂层，制造商可以创造出各种颜色，使霓虹灯成为广告和艺术装置的热门选择。发光电流在阴极射线管（CRT）中也起着至关重要的作用，CRT曾是电视和计算机显示器的标准显示技术。在CRT中，发光电流用于在屏幕上生成图像。该管包含真空，电子枪发出一束电子流向荧光屏。当这些电子撞击屏幕时，它们激发磷光涂层，产生可见的光辉。这项技术已经被现代LCD和LED显示器所取代，但理解发光电流有助于我们了解显示技术的演变。此外，发光电流不仅限于霓虹灯和CRT；它还可以在各种科学应用中观察到。例如，在气体放电实验中，科学家们经常利用发光电流研究气体在不同条件下的行为。通过调节电压和压力，研究人员可以观察光辉的变化，这可以提供有关气体性质及其与电场相互作用的宝贵数据。总之，术语发光电流概括了电气工程的一个迷人方面，架起了电与光之间的桥梁。从霓虹灯到阴极射线管，发光电流的应用多种多样且影响深远。通过进一步探索这一概念，我们可以更深入地理解许多我们日常生活中遇到的设备的基本原理。理解发光电流不仅增强了我们对电气现象的知识，还激发了我们对照亮我们世界的技术背后科学的好奇心。