meter bridge

简明释义

滑线电桥

英英释义

例句

1.To verify Ohm's law, we set up a meter bridge in our experiment.

为了验证欧姆定律，我们在实验中搭建了一个米桥。

2.The physics lab used a meter bridge to determine the resistance of different resistors.

物理实验室使用米桥来测定不同电阻器的电阻值。

3.The meter bridge is an essential tool for students studying electrical engineering.

米桥是学习电气工程的学生必不可少的工具。

4.We used a meter bridge to compare the resistance of two wires.

我们使用米桥比较两根导线的电阻。

5.During the workshop, we learned how to calibrate a meter bridge for accurate measurements.

在研讨会上，我们学习了如何校准米桥以获得准确的测量结果。

作文

The concept of a meter bridge is fundamental in the field of electrical engineering and physics, particularly in the study of resistance and conductivity. A meter bridge is an apparatus used to measure the unknown resistance of a component by comparing it with known resistances. It operates on the principle of a Wheatstone bridge, which allows for precise measurements by balancing two legs of a circuit. In this essay, I will explore the workings of a meter bridge, its applications, and its significance in practical scenarios.To begin with, a meter bridge consists of a one-meter-long wire, typically made of a material with uniform resistance, placed on a wooden or metallic base. The wire is connected to a power source and has a galvanometer attached to it. The basic idea is to create a balance between the known and unknown resistances by adjusting a sliding contact on the wire. When the bridge is balanced, the current through the galvanometer becomes zero, indicating that the ratio of the resistances is equal to the ratio of the lengths of the wire segments on either side of the sliding contact.The formula derived from this setup is R1/R2 = L1/L2, where R1 is the known resistance, R2 is the unknown resistance, L1 is the length of the wire corresponding to R1, and L2 is the length of the wire corresponding to R2. This relationship allows engineers and scientists to determine the value of an unknown resistor with high accuracy. The meter bridge is particularly useful in laboratory settings where precise measurements are critical.One of the key applications of a meter bridge is in educational institutions, where students learn about electrical circuits and resistance measurement. It serves as a practical tool to demonstrate theoretical concepts, bridging the gap between theory and real-world applications. By using a meter bridge, students can visualize how resistance works and gain hands-on experience in conducting experiments, which enhances their understanding of electrical principles.Moreover, the meter bridge finds its relevance in various industries, especially in quality control and testing of electrical components. Engineers use it to ensure that resistors and other components meet specified resistance values before they are integrated into larger systems. This ensures reliability and safety in electronic devices, as incorrect resistance can lead to malfunction or failure.In addition to its practical applications, the meter bridge also serves as a stepping stone to more advanced measuring techniques. As technology evolves, new devices and methods for measuring resistance have emerged, but the fundamental principles behind the meter bridge remain relevant. Understanding how to use a meter bridge lays the groundwork for comprehending more complex electrical measurements, such as impedance and reactance, which are crucial in alternating current (AC) circuits.In conclusion, the meter bridge is an essential tool for measuring resistance, with significant implications in both educational and industrial contexts. Its ability to provide accurate measurements makes it invaluable in the world of electrical engineering. By fostering a deeper understanding of resistance and circuit behavior, the meter bridge not only aids in academic learning but also contributes to the development of reliable electronic products. As we continue to innovate and advance in technology, the foundational knowledge gained from tools like the meter bridge will remain vital for future generations of engineers and scientists.

“米桥”的概念在电气工程和物理学领域中是基础性的，特别是在电阻和导电性研究中。“米桥”是一种用于通过与已知电阻进行比较来测量未知电阻的设备。它基于惠斯登电桥的原理，通过平衡电路的两个支路来实现精确测量。在这篇文章中，我将探讨“米桥”的工作原理、应用及其在实际场景中的重要性。首先，“米桥”由一根通常由均匀电阻材料制成的一米长的导线组成，放置在木质或金属底座上。导线连接到电源，并附有一个电流计。基本思想是在已知和未知电阻之间创建平衡，通过调整导线上的滑动接触点来实现。当电桥平衡时，流过电流计的电流变为零，表明电阻的比率等于导线两侧对应于滑动接触点的长度的比率。从这个设置中得出的公式是R1/R2 = L1/L2，其中R1是已知电阻，R2是未知电阻，L1是对应于R1的导线长度，L2是对应于R2的导线长度。这个关系使工程师和科学家能够以高精度确定未知电阻的值。“米桥”在实验室环境中尤其有用，在这些环境中，精确的测量至关重要。“米桥”的一个关键应用是在教育机构中，学生通过它学习电路和电阻测量。它作为一种实用工具来演示理论概念，弥合理论与实际应用之间的差距。通过使用“米桥”，学生可以直观地了解电阻的工作原理，并获得进行实验的实践经验，从而增强他们对电气原理的理解。此外，“米桥”在各个行业中也具有相关性，特别是在电子元件的质量控制和测试中。工程师使用它来确保电阻器和其他组件在集成到更大系统之前符合规定的电阻值。这确保了电子设备的可靠性和安全性，因为不正确的电阻可能导致故障或失效。除了其实际应用外，“米桥”还作为更高级测量技术的垫脚石。随着技术的发展，新的测量电阻的方法和设备不断涌现，但“米桥”背后的基本原理仍然适用。了解如何使用“米桥”为理解更复杂的电气测量（如阻抗和电抗）奠定了基础，这在交流电（AC）电路中至关重要。总之，“米桥”是测量电阻的重要工具，在教育和工业背景中具有重要意义。它提供准确测量的能力，使其在电气工程领域中不可或缺。通过加深对电阻和电路行为的理解，“米桥”不仅有助于学术学习，还促进了可靠电子产品的发展。随着我们继续创新和技术进步，从“米桥”等工具中获得的基础知识将对未来一代工程师和科学家至关重要。