torsion balance

简明释义

扭秤

英英释义

例句

1.The scientist used a torsion balance to measure the gravitational force between two small masses.

科学家使用扭转天平来测量两个小质量之间的引力。

2.The torsion balance can detect even the smallest changes in mass with remarkable precision.

扭转天平能够以惊人的精确度检测到质量的微小变化。

3.To study the effects of electrostatic forces, the researchers employed a highly sensitive torsion balance.

为了研究静电力的影响，研究人员使用了一种高度灵敏的扭转天平。

4.In the laboratory, the torsion balance was essential for determining the density of various materials.

在实验室中，扭转天平对于确定各种材料的密度至关重要。

5.The physics professor demonstrated the principles of torque using a torsion balance in class.

物理教授在课堂上用扭转天平演示了力矩的原理。

作文

The concept of a torsion balance is pivotal in the field of physics, particularly in the measurement of gravitational forces. A torsion balance is an instrument that utilizes the principle of torsion, where a wire or a rod is twisted to measure small forces. This device has historical significance, dating back to the late 18th century when it was first used by scientists like Henry Cavendish to determine the density of the Earth. The torsion balance consists of a horizontal bar suspended from a thin wire. When weights are placed on either end of the bar, the twisting of the wire causes a measurable angle of rotation, which can then be correlated to the force exerted by the weights.Understanding how a torsion balance operates requires knowledge of several physical principles. First, the concept of torque is essential. Torque is the rotational equivalent of linear force and is calculated as the product of the force applied and the distance from the pivot point. In the case of a torsion balance, the pivot point is where the wire is attached. When a weight is added, the torque generated causes the wire to twist, leading to a measurable angle that reflects the magnitude of the force applied.Moreover, the sensitivity of a torsion balance can be affected by various factors such as the material of the wire, its length, and the amount of mass being measured. For instance, a thinner wire will twist more easily than a thicker one, making the torsion balance more sensitive to smaller forces. This makes the torsion balance an invaluable tool in experiments requiring precise measurements, such as those in gravitational studies or in determining the mass of small objects.In modern science, while electronic scales and other advanced instruments have largely replaced traditional torsion balances, their fundamental principles remain relevant. Researchers continue to utilize the concepts behind the torsion balance in various applications, including the study of molecular interactions and the measurement of very weak forces. These applications highlight the enduring legacy of the torsion balance in scientific research.In conclusion, the torsion balance is not just a historical artifact; it represents a crucial development in our understanding of physical forces. Its ability to measure minute forces with great precision has paved the way for numerous discoveries in physics and engineering. As we continue to explore the universe at both macroscopic and microscopic levels, the principles embodied in the torsion balance will undoubtedly play a significant role in future innovations and discoveries. Understanding this instrument allows us to appreciate the intricate balance of forces that govern our world and the tools we use to measure them.

在物理学领域，扭转天平的概念至关重要，特别是在测量引力方面。扭转天平是一种利用扭转原理的仪器，其中一根线或杆被扭转以测量小力量。这种设备具有历史意义，可以追溯到18世纪末，当时科学家亨利·卡文迪许首次使用它来确定地球的密度。扭转天平由一根悬挂在细线上的水平杆组成。当在杆的两端放置重物时，线的扭转会导致可测量的旋转角度，这可以与施加的力量相联系。理解扭转天平的工作原理需要了解几个物理原则。首先，扭矩的概念至关重要。扭矩是线性力的旋转等价物，计算公式为施加的力与支点之间距离的乘积。在扭转天平的情况下，支点是线的连接处。当添加重量时，产生的扭矩导致线扭转，从而产生可测量的角度，反映施加力量的大小。此外，扭转天平的灵敏度可能受到多种因素的影响，例如线的材料、长度和测量的质量。例如，较细的线比较粗的线更容易扭转，使得扭转天平对较小的力量更加敏感。这使得扭转天平成为需要精确测量的实验中不可或缺的工具，例如在引力研究或确定小物体质量的实验中。这些应用突显了扭转天平在科学研究中的持久价值。在现代科学中，尽管电子秤和其他先进仪器在很大程度上取代了传统的扭转天平，但其基本原理仍然适用。研究人员继续在各种应用中利用扭转天平背后的概念，包括分子相互作用的研究和非常微弱的力量的测量。这些应用强调了扭转天平在科学研究中的持久遗产。总之，扭转天平不仅仅是一个历史文物；它代表了我们对物理力量理解的重要发展。其以极高的精度测量微小力量的能力为物理学和工程学的众多发现铺平了道路。当我们继续在宏观和微观层面探索宇宙时，扭转天平所体现的原理无疑将在未来的创新和发现中发挥重要作用。理解这一仪器使我们能够欣赏支配我们世界的力量之间的微妙平衡，以及我们用来测量它们的工具。