universal gravitation

简明释义

万有引力

英英释义

例句

1.The formula for universal gravitation can be used to predict the motion of satellites.

万有引力的公式可以用来预测卫星的运动。

2.Understanding universal gravitation is crucial for space exploration and navigation.

理解万有引力对太空探索和导航至关重要。

3.Isaac Newton's law of universal gravitation states that every mass attracts every other mass in the universe.

艾萨克·牛顿的万有引力定律指出，宇宙中的每个质量都会吸引其他每个质量。

4.The concept of universal gravitation helps us understand why planets orbit the sun.

万有引力的概念帮助我们理解为什么行星围绕太阳运行。

5.In physics, universal gravitation is fundamental to calculating the forces between celestial bodies.

在物理学中，万有引力是计算天体之间力的基础。

作文

The concept of universal gravitation has profoundly shaped our understanding of the universe. Proposed by Sir Isaac Newton in the late 17th century, universal gravitation is the law that describes the attraction between two masses. According to this principle, 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 their centers. This fundamental idea not only explains why objects fall to the ground but also governs the motion of celestial bodies in space.To grasp the significance of universal gravitation, we must first appreciate its historical context. Before Newton, the prevailing theories of motion were largely based on Aristotle’s ideas, which posited that heavier objects fall faster than lighter ones. However, through meticulous experimentation and observation, Newton demonstrated that all objects, regardless of their mass, experience the same acceleration due to gravity when in free fall. This was a revolutionary insight that laid the groundwork for classical mechanics.The implications of universal gravitation extend far beyond simple observations on Earth. It provides the framework for understanding the orbits of planets, moons, and artificial satellites. For instance, the reason why the Earth orbits the Sun, and why the Moon orbits the Earth, can be attributed to the gravitational forces described by universal gravitation. These interactions are not only crucial for astronomy but also for the navigation of spacecraft, as engineers must account for gravitational influences when plotting courses through space.Moreover, universal gravitation is integral to the study of astrophysics. The formation of galaxies, stars, and planetary systems can be explained through gravitational interactions. For example, during the early stages of the universe, small fluctuations in density led to the gravitational attraction of gas and dust, eventually forming stars and galaxies. Without universal gravitation, our understanding of cosmic evolution would be severely limited.In contemporary physics, universal gravitation remains a crucial component, though it has been expanded upon by Einstein’s theory of general relativity. While Newton’s law provides an excellent approximation for most practical purposes, general relativity offers a more comprehensive explanation of gravity as the curvature of spacetime caused by mass. Nonetheless, Newton’s universal gravitation continues to be a vital tool in many scientific applications, from predicting satellite trajectories to calculating gravitational effects in engineering.In conclusion, the law of universal gravitation is a cornerstone of physics that has transformed our comprehension of both terrestrial and celestial phenomena. Its principles are not only fundamental to the sciences but also resonate in various aspects of technology and everyday life. Understanding universal gravitation allows us to appreciate the intricate dance of the cosmos and the forces that keep our world in balance. As we continue to explore the universe, the legacy of Newton’s insight into universal gravitation will undoubtedly guide future discoveries and innovations in our quest to understand the nature of reality.

万有引力的概念深刻地影响了我们对宇宙的理解。它是由艾萨克·牛顿在17世纪末提出的，万有引力是描述两个质量之间吸引力的定律。根据这一原则，每个点质量都以与其质量的乘积成正比、与其中心之间距离的平方成反比的力量吸引宇宙中的每一个其他点质量。这个基本思想不仅解释了物体为何下落，还支配着天体在空间中的运动。要理解万有引力的重要性，我们首先必须欣赏它的历史背景。在牛顿之前，运动的主流理论主要基于亚里士多德的观点，认为较重的物体下落得更快。然而，通过细致的实验和观察，牛顿证明了所有物体，无论其质量如何，在自由下落时都经历相同的重力加速度。这一革命性的见解为经典力学奠定了基础。万有引力的影响远不止于对地球上简单现象的观察。它提供了理解行星、卫星和人造卫星轨道的框架。例如，地球围绕太阳运转以及月球围绕地球转动的原因可以归因于万有引力所描述的引力作用。这些相互作用不仅对天文学至关重要，而且对航天器的导航也至关重要，因为工程师在规划太空航行路线时必须考虑引力的影响。此外，万有引力对于天体物理学的研究至关重要。星系、恒星和行星系统的形成可以通过引力相互作用来解释。例如，在宇宙早期阶段，密度的小波动导致气体和尘埃的引力吸引，最终形成恒星和星系。如果没有万有引力，我们对宇宙演化的理解将受到严重限制。在当代物理学中，万有引力仍然是一个关键组成部分，尽管它已经被爱因斯坦的广义相对论扩展。虽然牛顿的定律在大多数实际应用中提供了良好的近似，但广义相对论提供了更全面的解释，认为引力是由质量引起的时空弯曲。尽管如此，牛顿的万有引力仍然是许多科学应用中的重要工具，从预测卫星轨迹到计算工程中的引力效应。总之，万有引力定律是物理学的基石，改变了我们对地球和天体现象的理解。它的原理不仅是科学的基础，还在技术和日常生活的各个方面产生共鸣。理解万有引力使我们能够欣赏宇宙的复杂舞蹈及其维持世界平衡的力量。随着我们继续探索宇宙，牛顿对万有引力的洞察遗产无疑将引导未来的发现和创新，帮助我们理解现实的本质。