electroscope

简明释义

英[ɪˈlektrəʊˌskəʊp]美[ɪˈlektrəˌskoʊp]

n. [电] 验电器

英英释义

单词用法

同义词

反义词

例句

1.With the combination of voltage testing and UV-light detecting system, the non-contact UHV electroscope III was successfully developed.

将本课题研究的紫外光检测法应用到特高压验电器的研发中，成功研发出第三代基于紫外脉冲检测法的非接触式特高压验电器。

2.With the combination of voltage testing and UV-light detecting system, the non-contact UHV electroscope III was successfully developed.

将本课题研究的紫外光检测法应用到特高压验电器的研发中，成功研发出第三代基于紫外脉冲检测法的非接触式特高压验电器。

3.In today's experiment you are going to build an electroscope to measure the static electricity of various household objects.

今天的实验中，你会自己做一个验电器，来测量看看不同的家用品各会产生多少静电。

4.As there was already pre-charge applied to the electroscope, an additional little charge caused reaction.

由于已经有预充电适用于验电器，额外收取很少引起的反应。

5.When the fur is removed from the vicinity of the electroscope , the leaves return to the original angle.

当毛皮从验电器旁边拿走后，金箔又恢复原来的角度。

6.Step 3: If the aluminum foil ball is repelled away from the dish, the electroscope works.

步骤三：如果这颗铝箔球和锡箔烤盘彼此排斥，就表示你的验电器成功了。

7.Figure 4-2 shows a present - day laboratory version of the electroscope.

图4 - 2就是目前实验室里的验电器样式。

8.Figure 4-2 a present - day laboratory version of the electroscope.

图4 - 2就是目前实验室里的验电器样式。

9.It was an electroscope which contained a small amount of radium.

这是一个验电器，其中载有少量的镭。

10.Her electroscope was a metal case with two holes in its side.

她的验电器是一个金属盒子，旁边有两个小孔。

11.The scientist used an electroscope to detect the presence of electric charge.

科学家使用一个电荷计来检测电荷的存在。

12.In the classroom, the teacher demonstrated how an electroscope works by charging it with a balloon.

在课堂上，老师通过用气球给电荷计充电来演示它是如何工作的。

13.An electroscope can show whether an object is positively or negatively charged.

一个电荷计可以显示一个物体是带正电还是负电。

14.After rubbing the plastic rod with fur, I brought it close to the electroscope and observed its reaction.

在用毛皮摩擦塑料棒后，我把它靠近电荷计并观察它的反应。

15.The electroscope indicated that the metal sphere was charged when the leaves diverged.

当叶子分开时，电荷计表明金属球带电。

作文

The study of electricity has fascinated scientists and students alike for centuries. One of the simplest yet most effective tools used to demonstrate the principles of static electricity is the electroscope. An electroscope (电探测器) is an instrument that can detect electric charge and is a fundamental device in the field of electrostatics. Its design is quite simple, typically consisting of a metal rod connected to two thin metal leaves, usually made of gold or aluminum, which hang freely from the bottom of the rod inside a glass container. When an electrically charged object is brought near the electroscope, it induces a charge in the metal rod. If the object is positively charged, electrons from the electroscope are attracted toward the object, leaving the leaves with a positive charge. Conversely, if the object is negatively charged, the excess electrons from the object will repel the electrons in the electroscope, causing the leaves to acquire a negative charge. This results in the leaves of the electroscope spreading apart due to the like charges repelling each other. The electroscope serves as an excellent educational tool because it visually demonstrates the principles of charge interaction. By experimenting with different materials, students can observe how various objects can transfer charge through contact or induction. For instance, rubbing a balloon on hair can create a static charge that can then be used to charge the electroscope and make the leaves diverge. This hands-on experience solidifies their understanding of electrostatic principles. Moreover, the electroscope can also be used to determine whether an object is charged or neutral. By bringing a charged object close to the electroscope, one can observe the behavior of the leaves. If they spread apart, it indicates that the object is charged. If there is no movement, the object is likely neutral. This simple test can lead to deeper discussions about the nature of electric charge, conductors, and insulators. In addition to its educational value, the electroscope has historical significance. It was one of the first devices that allowed scientists to explore and understand the nature of electricity. Invented in the 18th century, the electroscope paved the way for further advancements in electrical science. Many famous scientists, including Benjamin Franklin, used variations of the electroscope to conduct experiments that contributed to our current understanding of electricity. Today, while technology has advanced and more sophisticated instruments are available, the electroscope remains a staple in physics classrooms around the world. Its ability to provide a clear and immediate visual representation of electric charge makes it an invaluable tool for teaching and learning about electricity. Students who engage with the electroscope not only learn about the properties of electric charge but also develop critical thinking and experimental skills that are essential in scientific inquiry. In conclusion, the electroscope (电探测器) is more than just a simple device; it is a bridge between the theoretical concepts of electricity and practical experimentation. Through its use, students can gain a deeper appreciation for the wonders of science and the fundamental principles that govern the natural world. Whether in a classroom or a laboratory, the electroscope continues to inspire curiosity and ignite a passion for learning about electricity.

电学的研究吸引了科学家和学生几个世纪以来的兴趣。用于演示静电原理的最简单但最有效的工具之一是电探测器。电探测器是一种可以检测电荷的仪器，是电静电领域的基本设备。它的设计相当简单，通常由一个金属杆组成，连接到两个薄金属叶片，通常由金或铝制成，这些叶片自由悬挂在玻璃容器底部。 当带电物体靠近电探测器时，它会在金属杆中诱导出电荷。如果物体带正电，来自电探测器的电子会被物体吸引，导致叶片带正电。相反，如果物体带负电，来自物体的过量电子将排斥电探测器中的电子，使叶片获得负电荷。这导致电探测器的叶片因同种电荷相互排斥而分开。 电探测器作为一种优秀的教育工具，因为它直观地演示了电荷相互作用的原理。通过对不同材料进行实验，学生可以观察到各种物体如何通过接触或感应转移电荷。例如，用气球摩擦头发可以产生静电，然后用来给电探测器充电，使叶片分开。这种动手体验巩固了他们对静电原理的理解。 此外，电探测器还可以用来判断物体是带电还是中性。通过将带电物体靠近电探测器，可以观察到叶片的行为。如果它们分开，这表明物体带电。如果没有运动，物体可能是中性的。这种简单的测试可以引导深入讨论电荷的性质、导体和绝缘体。 除了教育价值外，电探测器还有历史意义。它是最早允许科学家探索和理解电的设备之一。发明于18世纪，电探测器为电学的进一步发展铺平了道路。许多著名科学家，包括本杰明·富兰克林，都使用过变种的电探测器进行实验，为我们当前对电的理解做出了贡献。 今天，尽管技术已经进步，提供了更复杂的仪器，但电探测器仍然是世界各地物理课堂的基础。它能够提供清晰、即时的电荷可视化表示，使其成为教授和学习电学的宝贵工具。参与电探测器实验的学生不仅了解电荷的性质，还培养了科学探究所需的批判性思维和实验技能。 总之，电探测器 (电探测器) 不仅仅是一个简单的设备；它是电学理论概念与实际实验之间的桥梁。通过它的使用，学生可以对科学的奇迹以及支配自然界的基本原理有更深刻的理解。无论是在课堂还是实验室，电探测器继续激发好奇心，点燃对学习电学的热情。