gravitational field

简明释义

重力场

英英释义

例句

1.The gravitational field 引力场 can be visualized as lines of force emanating from a mass.

可以将引力场 引力场可视化为从质量发出的力线。

2.Scientists study the gravitational field 引力场 of different planets to understand their mass and density.

科学家研究不同星球的引力场 引力场以了解它们的质量和密度。

3.The gravitational field 引力场 of the Moon affects the ocean tides on Earth.

月球的引力场 引力场影响着地球上的海洋潮汐。

4.Astronauts experience a reduced gravitational field 引力场 while in orbit around the Earth.

宇航员在地球轨道上经历减弱的引力场 引力场。

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

地球表面的引力场 引力场强度约为9.81米每秒平方。

作文

The concept of a gravitational field is fundamental in understanding the forces that govern our universe. A gravitational field can be defined as a region of space surrounding a mass where another mass experiences a force of attraction. This phenomenon is a result of the mass of an object, which creates a pull on other objects in its vicinity. For instance, Earth generates a strong gravitational field that keeps the Moon in orbit and pulls objects towards its surface. To delve deeper into the mechanics of a gravitational field, we can refer to Isaac Newton's law of universal gravitation. According to this law, every point mass attracts every other point mass in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. This means that the closer two masses are, the stronger the gravitational field they create around each other. In practical terms, the strength of the gravitational field can be measured in units called newtons per kilogram (N/kg). On the surface of the Earth, this value is approximately 9.81 N/kg, which indicates the force experienced by a 1 kg mass due to Earth's gravity. This measurement is crucial for various applications, from engineering to space exploration. Moreover, the concept of a gravitational field extends beyond our planet. In the realm of astrophysics, the gravitational field of massive celestial bodies like stars and black holes influences the motion of nearby objects, including planets, asteroids, and even light. The study of these fields helps astronomers understand the dynamics of galaxies and the universe as a whole. One fascinating aspect of gravitational fields is their relationship with time and space, as described by Albert Einstein's theory of general relativity. Einstein proposed that mass not only creates a gravitational field but also warps the fabric of spacetime around it. This means that the presence of mass alters the paths that objects take through space and time, leading to phenomena such as gravitational lensing, where light bends around massive objects. In conclusion, the gravitational field is a crucial concept in physics that explains how masses interact through the force of gravity. Understanding this field allows us to comprehend not only the motions of objects on Earth but also the intricate dance of celestial bodies in the universe. As we continue to explore the cosmos, the study of gravitational fields will remain essential in unlocking the mysteries of space and time.

引力场的概念在理解支配我们宇宙的力量方面是基础性的。引力场可以定义为一个空间区域，围绕着一个质量，在该区域内另一个质量会经历吸引力。这种现象是由于物体的质量产生的，它对附近的其他物体产生拉力。例如，地球产生了强大的引力场，使月球保持轨道并将物体拉向其表面。深入探讨引力场的机制，我们可以参考艾萨克·牛顿的万有引力定律。根据这一定律，每个点质量都会以一个力吸引宇宙中的每个其他点质量，这个力与它们质量的乘积成正比，与它们之间距离的平方成反比。这意味着两个质量越近，它们之间产生的引力场就越强。在实际应用中，引力场的强度可以用牛顿每千克（N/kg）来测量。在地球表面，这个值大约是9.81 N/kg，表示由于地球引力而经历的1千克质量的力。这个测量对于各种应用至关重要，从工程到太空探索。此外，引力场的概念超越了我们的星球。在天体物理学领域，像恒星和黑洞这样的巨大天体的引力场影响着附近物体的运动，包括行星、小行星甚至光。这些领域的研究帮助天文学家理解星系及整个宇宙的动态。引力场的一个迷人方面是它与时间和空间的关系，正如阿尔伯特·爱因斯坦的广义相对论所描述的。爱因斯坦提出，质量不仅创造引力场，还扭曲其周围的时空结构。这意味着质量的存在改变了物体在时空中的路径，导致了诸如引力透镜等现象，即光在巨大物体周围弯曲。总之，引力场是物理学中一个至关重要的概念，解释了质量如何通过引力相互作用。理解这个领域使我们能够理解不仅是地球上物体的运动，还包括宇宙中天体的复杂运动。随着我们继续探索宇宙，对引力场的研究将继续在揭开空间和时间的奥秘中发挥重要作用。