search coil

简明释义

搜寻线圈

英英释义

例句

1.He adjusted the sensitivity of his metal detector's search coil to avoid false signals.

他调整了金属探测器的探测线圈的灵敏度，以避免错误信号。

2.The archaeologist used a search coil to locate buried artifacts.

考古学家使用探测线圈来定位埋藏的文物。

3.The search coil is an essential component of any metal detector.

对于任何金属探测器来说，探测线圈是一个必不可少的组件。

4.During the metal detecting event, participants were instructed on how to properly use their search coil.

在金属探测活动中，参与者被指导如何正确使用他们的探测线圈。

5.A larger search coil can improve depth detection when searching for larger objects.

较大的探测线圈可以在寻找较大物体时提高深度探测能力。

作文

In the realm of physics and engineering, the term search coil refers to a specific type of coil used in various applications, particularly in the field of electromagnetic induction. A search coil is essentially a loop of wire that is designed to detect changes in magnetic fields. This detection capability makes it an invaluable tool in many scientific experiments and practical applications, such as metal detectors and electromagnetic field mapping.One of the primary uses of a search coil is in the detection of alternating current (AC) magnetic fields. When an AC current flows through a conductor, it generates a changing magnetic field around it. A search coil placed in proximity to this conductor will experience a change in magnetic flux, which induces an electromotive force (EMF) in the coil according to Faraday's law of electromagnetic induction. This induced EMF can be measured and analyzed to provide valuable information about the characteristics of the magnetic field, such as its strength and frequency.Another significant application of the search coil is in the field of geophysics, where it is used to measure the Earth's magnetic field and detect anomalies. Geophysicists often deploy search coils in surveys to locate mineral deposits, oil reserves, and even archaeological sites. By analyzing the data collected from these coils, scientists can infer the presence of different materials underground based on their unique magnetic signatures.Moreover, search coils are also integral components in the design of metal detectors. In a metal detector, the search coil emits an electromagnetic field that penetrates the ground. When this field encounters a metallic object, it induces a secondary magnetic field around the object, which is then detected by the search coil. The resulting signal alerts the user to the presence of metal, making search coils essential for treasure hunting and archaeological excavations.The design and construction of a search coil can vary significantly depending on its intended use. Factors such as the number of turns in the coil, its diameter, and the type of wire used all play crucial roles in determining the sensitivity and effectiveness of the coil. For instance, a larger coil with more turns may be more sensitive to distant magnetic fields, while a smaller coil might provide better resolution for detecting nearby objects.In conclusion, the search coil is a fundamental component in various scientific and practical applications, especially in the fields of physics, geophysics, and engineering. Its ability to detect changes in magnetic fields allows scientists and engineers to gather critical data about their environments, whether it be for locating resources underground or conducting experiments in a laboratory setting. Understanding how a search coil works and its applications is essential for anyone interested in the fields of electromagnetism and applied physics. As technology advances, the applications and designs of search coils continue to evolve, promising even more exciting developments in the future.

在物理和工程领域，术语search coil指的是一种特定类型的线圈，广泛应用于电磁感应领域。search coil本质上是一个设计用于检测磁场变化的导线环。这种检测能力使其成为许多科学实验和实际应用中的宝贵工具，例如金属探测器和电磁场绘制。search coil的主要用途之一是在交变电流（AC）磁场的检测。当交流电流通过导体时，它会在周围产生变化的磁场。放置在导体附近的search coil将经历磁通量的变化，根据法拉第电磁感应定律，在线圈中产生电动势（EMF）。可以测量和分析这种感应的电动势，以提供关于磁场特征的宝贵信息，如其强度和频率。search coil在地球物理学领域的另一个重要应用是测量地球的磁场和检测异常现象。地球物理学家通常在调查中部署search coils以定位矿藏、石油储备甚至考古遗址。通过分析从这些线圈收集的数据，科学家可以根据不同材料独特的磁性特征推断地下存在的物质。此外，search coils也是金属探测器设计中的重要组成部分。在金属探测器中，search coil发出穿透地面的电磁场。当这个场遇到金属物体时，会在物体周围诱导出二次磁场，然后被search coil检测到。生成的信号提醒用户金属的存在，使得search coils在寻宝和考古挖掘中至关重要。search coil的设计和构造可能因其预期用途而有显著差异。线圈的圈数、直径和所用导线类型等因素都在决定线圈的灵敏度和有效性方面发挥着重要作用。例如，一个圈数较多、直径较大的线圈可能对远处的磁场更敏感，而一个较小的线圈可能在检测附近物体时提供更好的分辨率。总之，search coil是各种科学和实际应用中的基本组成部分，尤其是在物理、地球物理和工程领域。它检测磁场变化的能力使科学家和工程师能够收集有关环境的重要数据，无论是用于定位地下资源还是在实验室环境中进行实验。了解search coil的工作原理及其应用对于任何对电磁学和应用物理感兴趣的人来说都是至关重要的。随着技术的进步，search coils的应用和设计不断演变，未来将带来更加令人兴奋的发展。