gravitational field

简明释义

万有引力场

英英释义

例句

1.The strength of the gravitational field 引力场 increases as you get closer to the Earth.

当你靠近地球时，引力场的强度会增加。

2.The gravitational field 引力场 of a black hole is so strong that not even light can escape it.

黑洞的引力场如此强大，以至于连光都无法逃脱。

3.We can calculate the gravitational field 引力场 using Newton's law of universal gravitation.

我们可以使用牛顿的万有引力定律来计算引力场。

4.Astronauts experience a different gravitational field 引力场 while in space compared to on Earth.

宇航员在太空中经历的引力场与在地球上的不同。

5.The gravitational field 引力场 around the Earth affects satellite orbits.

地球周围的引力场影响卫星轨道。

作文

The concept of a gravitational field is fundamental in understanding how objects interact with one another through the force of gravity. In simple terms, a gravitational field can be described as a region of space surrounding a mass where other masses experience a force of attraction. This concept was first introduced by Sir Isaac Newton in the 17th century, and it has since become a cornerstone of classical physics.When we think about the Earth, we often visualize it as a massive object that exerts an attractive force on everything around it. This force is what keeps us grounded and prevents us from floating into space. The strength of the gravitational field produced by the Earth is approximately 9.81 meters per second squared, which means that any object falling towards the Earth accelerates at this rate due to gravity.However, the influence of a gravitational field is not limited to the Earth alone; every mass generates its own gravitational field. For instance, the Moon has its own gravitational field that affects the tides on Earth. Similarly, the Sun's massive gravitational field governs the orbits of the planets in our solar system. This interconnectedness of gravitational fields illustrates the universal nature of gravity as a force that binds celestial bodies together.One of the most fascinating aspects of a gravitational field is how it can be visualized. Imagine placing a heavy ball on a stretched rubber sheet. The ball creates a depression, causing smaller balls placed nearby to roll towards it. This is analogous to how a gravitational field works, where larger masses create a curvature in spacetime, influencing the motion of smaller masses. This visualization helps us understand not only the strength of a gravitational field but also its effect on the trajectories of objects within it.Moreover, the study of gravitational fields has profound implications for our understanding of the universe. Albert Einstein's theory of general relativity expanded upon Newton's ideas, describing gravity not just as a force but as a curvature of spacetime caused by mass. According to this theory, the gravitational field is not merely an invisible force acting at a distance; rather, it is a feature of the very fabric of the universe itself.In practical applications, the understanding of gravitational fields is crucial in various fields such as astronomy, engineering, and even everyday life. For example, satellites orbiting the Earth must account for the gravitational field when determining their trajectories. Engineers designing structures also consider the effects of the Earth's gravitational field to ensure stability and safety.In conclusion, the gravitational field is a vital concept in physics that explains the interactions between masses and the forces that govern our universe. From keeping us anchored to the ground to dictating the motions of celestial bodies, the gravitational field is a powerful force that shapes our reality. Understanding this concept not only enhances our comprehension of physics but also deepens our appreciation for the complex and interconnected nature of the cosmos.

‘引力场’的概念在理解物体如何通过引力相互作用方面至关重要。简单来说，‘引力场’可以描述为一个围绕质量的空间区域，在这个区域内，其他质量会受到吸引力的影响。这个概念最早是由艾萨克·牛顿爵士在17世纪提出的，此后它成为经典物理学的基石。当我们想到地球时，我们通常将其视为一个巨大的物体，它对周围的一切施加一种吸引力。这种力量就是让我们保持在地面上，防止我们漂浮到太空中的原因。地球产生的‘引力场’的强度约为9.81米每秒平方，这意味着任何向地球下落的物体都因重力以这个速度加速。然而，‘引力场’的影响并不仅限于地球；每个质量都产生自己的‘引力场’。例如，月球有自己的‘引力场’，影响着地球上的潮汐。同样，太阳的巨大‘引力场’支配着我们太阳系中行星的轨道。这种‘引力场’的相互联系说明了重力作为一种将天体联系在一起的力量的普遍性。‘引力场’最迷人的方面之一是它如何被可视化。想象一下在拉伸的橡胶表面上放置一个重球。这个球会产生一个凹陷，使附近的小球滚向它。这类似于‘引力场’的工作方式，其中较大质量在时空中造成弯曲，影响较小质量的运动。这种可视化帮助我们理解‘引力场’的强度及其对其中物体轨迹的影响。此外，‘引力场’的研究对我们理解宇宙具有深远的影响。阿尔伯特·爱因斯坦的广义相对论扩展了牛顿的思想，描述了重力不仅仅是一种力量，而是由质量引起的时空弯曲。根据这一理论，‘引力场’不仅仅是作用于远处的无形力量；相反，它是宇宙本身的结构特征。在实际应用中，对‘引力场’的理解在天文学、工程学甚至日常生活等各个领域都至关重要。例如，绕地球运行的卫星在确定轨迹时必须考虑‘引力场’。设计结构的工程师也会考虑地球的‘引力场’对稳定性和安全性的影响。总之，‘引力场’是物理学中一个重要的概念，它解释了质量之间的相互作用以及支配我们宇宙的力量。从让我们固定在地面到决定天体的运动，‘引力场’是塑造我们现实的强大力量。理解这一概念不仅增强了我们对物理的理解，也加深了我们对宇宙复杂和相互联系本质的欣赏。