contact electricity

简明释义

接触电

英英释义

例句

1.Static cling is often caused by contact electricity when clothes rub against each other in the dryer.

衣物在干衣机中相互摩擦时，常常会因为接触电流而导致静电粘附。

2.Children often experience contact electricity when they slide down a plastic slide on a dry day.

在干燥的日子里，孩子们从塑料滑梯滑下来时常常会经历接触电流。

3.When you touch a metal object after walking on a carpet, you might experience a small shock due to contact electricity.

当你在地毯上走动后触摸金属物体时，可能会因接触电流而感到轻微的电击。

4.Electricians must be cautious of contact electricity when working with live wires.

电工在处理带电线路时必须小心接触电流。

5.The phenomenon of contact electricity can be observed when two different materials are in contact and then separated.

当两种不同材料接触后再分开时，可以观察到接触电流的现象。

作文

The concept of contact electricity is essential in understanding how electrical currents can be generated through the physical interaction between two materials. This phenomenon occurs when two different conductive materials come into contact with one another, allowing electrons to transfer from one material to the other. This transfer of electrons creates a difference in charge, which can lead to the flow of electricity once the materials are separated. 接触电流的概念在理解电流如何通过两种材料之间的物理相互作用产生时至关重要。当两种不同的导电材料相互接触时，就会发生这种现象，从而使电子从一种材料转移到另一种材料。电子的转移会导致电荷差异，一旦材料分开，就会导致电流的流动。To illustrate this concept, consider the example of a simple battery. Inside a battery, chemical reactions occur that create a buildup of electrons at one terminal, while the other terminal has a deficit of electrons. When a circuit is completed by connecting these terminals with a wire, the electrons flow from the negative terminal to the positive terminal, generating an electric current. However, if we were to touch two different metals together, such as copper and zinc, we would also witness the effects of contact electricity. The electrons from the zinc will move to the copper, creating a potential difference that can be utilized in various applications.Understanding contact electricity is crucial not only for basic science but also for practical applications in technology. For instance, devices like thermocouples utilize this principle to measure temperature differences. When two dissimilar metals are joined together and heated, they produce a voltage that can be measured. This voltage is directly related to the temperature difference between the junctions of the two metals, demonstrating the practical utility of contact electricity in everyday technology.Moreover, the concept of contact electricity extends beyond just metals. It can also be seen in the interactions of non-metal materials. For example, when you rub a balloon against your hair, electrons are transferred from your hair to the balloon, giving the balloon a negative charge. This is a classic demonstration of static electricity, which is closely related to the principles of contact electricity. The charged balloon can then attract small pieces of paper or even lift off the ground when it comes close to a neutral object.In conclusion, contact electricity plays a significant role in both theoretical and applied physics. By understanding how electrons transfer between materials upon contact, we can harness this knowledge to innovate and improve technology. From batteries to temperature sensors, the principles of contact electricity are foundational to many modern devices. As we continue to explore the interactions of materials at the atomic level, the importance of contact electricity will undoubtedly remain a key area of focus in scientific research and technological advancement.

接触电流的概念在理解电流如何通过两种材料之间的物理相互作用产生时至关重要。当两种不同的导电材料相互接触时，就会发生这种现象，从而使电子从一种材料转移到另一种材料。电子的转移会导致电荷差异，一旦材料分开，就会导致电流的流动。 为了说明这一概念，可以考虑一个简单电池的例子。在电池内部，化学反应发生，导致一个端子上电子的积累，而另一个端子则缺乏电子。当通过用电线连接这些端子来完成电路时，电子就会从负端流向正端，从而产生电流。然而，如果我们将两种不同的金属，如铜和锌，触碰在一起，我们也会见证接触电流的效果。锌中的电子将移动到铜中，从而产生一个可以在各种应用中利用的电位差。理解接触电流不仅对基础科学至关重要，而且对技术中的实际应用也非常重要。例如，热电偶等设备利用这一原理来测量温度差。当两种不同的金属连接在一起并加热时，它们会产生一个可以测量的电压。这个电压与两种金属连接点之间的温度差直接相关，展示了接触电流在日常技术中的实际效用。此外，接触电流的概念不仅限于金属。它也可以在非金属材料的相互作用中看到。例如，当你用气球摩擦头发时，电子会从你的头发转移到气球，使气球带上负电荷。这是静电的经典演示，与接触电流的原理密切相关。带电的气球随后可以吸引小纸片，甚至在靠近中性物体时离开地面。总之，接触电流在理论和应用物理中都扮演着重要角色。通过理解电子在接触时如何在材料之间转移，我们可以利用这一知识来创新和改善技术。从电池到温度传感器，接触电流的原理是许多现代设备的基础。随着我们继续探索材料在原子层面的相互作用，接触电流的重要性无疑将继续成为科学研究和技术进步的重点领域。