gravitational field

简明释义

重力场

英英释义

例句

1.The gravitational field 引力场 near a massive object is stronger than that far away.

靠近大质量物体的引力场比远处的要强。

2.The strength of the gravitational field 引力场 on Earth is approximately 9.81 m/s².

地球上的引力场 引力场强度大约为9.81米每秒平方。

3.Astronauts experience a different gravitational field 引力场 when they are in space.

宇航员在太空中体验到不同的引力场。

4.Scientists study the gravitational field 引力场 of black holes to understand their properties.

科学家研究黑洞的引力场以理解它们的特性。

5.The gravitational field 引力场 around a planet affects the orbits of its moons.

行星周围的引力场影响着其卫星的轨道。

作文

The concept of a gravitational field is fundamental in understanding the forces that govern the motion of objects in the universe. A gravitational field can be defined as a region of space around a mass where another mass experiences a force of attraction. This idea was first introduced by Sir Isaac Newton in the 17th century, and it has since become a cornerstone of classical physics. In simple terms, the strength of a gravitational field is determined by the mass of the object creating it and the distance from that object. For example, the Earth generates a strong gravitational field due to its large mass, which keeps us and everything else anchored to its surface. The closer you are to the center of the Earth, the stronger the gravitational field you experience. This is why astronauts feel weightless when they are in space; they are far enough away from the Earth's gravitational field that the force of gravity is significantly weaker.The implications of gravitational fields extend beyond just keeping us grounded. They play a crucial role in the orbits of planets, moons, and artificial satellites. For instance, the Moon orbits the Earth because of the gravitational field created by our planet. Similarly, the planets orbit the Sun due to the Sun's massive gravitational field. Without these fields, celestial bodies would drift aimlessly through space, and the structured solar system we know today would not exist.Moreover, the study of gravitational fields has led to significant advancements in technology and science. For example, understanding how to calculate and predict gravitational fields has been essential for launching satellites and space missions. Engineers must take into account the gravitational field of the Earth, as well as other celestial bodies, when designing spacecraft to ensure they can navigate successfully. In modern physics, the concept of gravitational fields has evolved with the introduction of Einstein's theory of general relativity. According to this theory, gravity is not simply a force but rather a curvature of spacetime caused by mass. This means that massive objects like planets and stars create 'dents' in the fabric of spacetime, and other objects move along the paths dictated by these curves. This revolutionary perspective has deepened our understanding of the universe and has led to discoveries such as black holes and gravitational waves.In conclusion, the gravitational field is a vital concept that helps us comprehend the interactions between masses in the universe. From keeping us on the ground to governing the orbits of celestial bodies, gravitational fields are integral to both our everyday lives and the broader workings of the cosmos. As we continue to explore and understand these fields, we may unlock even more secrets of the universe, enhancing our knowledge and technological capabilities in the process.

引力场的概念在理解支配宇宙中物体运动的力量时至关重要。引力场可以定义为一个空间区域，在这个区域内，一个物体会受到另一个物体的吸引力。这一思想最早由艾萨克·牛顿爵士在17世纪提出，并且自此成为经典物理学的基石。简单来说，引力场的强度由产生它的物体的质量和该物体的距离决定。例如，地球由于其巨大质量而产生强大的引力场，这使得我们和其他所有物体都被固定在地表。你离地球中心越近，你体验到的引力场就越强。这就是为什么宇航员在太空中感觉失重；他们远离地球的引力场，使得重力的作用显著减弱。引力场的影响不仅仅限于让我们保持在地面上。它们在行星、卫星和人造卫星的轨道中扮演着至关重要的角色。例如，月球围绕地球运行是因为地球产生的引力场。同样，行星围绕太阳运行也是由于太阳的巨大引力场。如果没有这些场，天体将无目的地漂浮在太空中，我们今天所知的有结构的太阳系将不存在。此外，对引力场的研究推动了科技和科学的重大进展。例如，理解如何计算和预测引力场对于发射卫星和太空任务至关重要。工程师在设计航天器时必须考虑地球的引力场以及其他天体的引力场，以确保它们能够成功导航。在现代物理学中，随着爱因斯坦广义相对论的提出，引力场的概念发生了变化。根据这一理论，重力不仅仅是一种力量，而是由质量引起的时空弯曲。这意味着像行星和恒星这样的大质量物体在时空的结构中产生“凹陷”，其他物体沿着这些曲线所决定的路径移动。这一革命性的观点加深了我们对宇宙的理解，并导致了黑洞和引力波等发现。总之，引力场是一个重要的概念，帮助我们理解宇宙中物体之间的相互作用。从让我们站在地面上到支配天体的轨道，引力场对我们日常生活和宇宙的更广泛运作都是不可或缺的。随着我们继续探索和理解这些场，我们可能会解锁更多宇宙的秘密，从而在这一过程中增强我们的知识和技术能力。