Kepler's laws

简明释义

开普勒定律

英英释义

例句

1.The first law, which states that planets move in elliptical orbits, is one of the key points of Kepler's laws (开普勒定律).

第一定律指出行星沿椭圆轨道运动，这是Kepler's laws（开普勒定律）的关键点之一。

2.The orbits of the planets can be predicted using Kepler's laws (开普勒定律).

行星的轨道可以通过Kepler's laws（开普勒定律）进行预测。

3.Many modern spacecraft trajectories are designed based on Kepler's laws (开普勒定律).

许多现代航天器的轨迹设计都是基于Kepler's laws（开普勒定律）。

4.Understanding Kepler's laws (开普勒定律) is essential for anyone studying astrophysics.

理解Kepler's laws（开普勒定律）对于任何研究天体物理学的人来说都是必不可少的。

5.In astronomy class, we learned about Kepler's laws (开普勒定律) and how they describe the motion of planets.

在天文学课上，我们学习了关于Kepler's laws（开普勒定律）的内容，以及它们如何描述行星的运动。

作文

The universe has always fascinated humanity, and among the many brilliant minds that have contributed to our understanding of it, Johannes Kepler stands out. His groundbreaking work in the early 17th century laid the foundation for modern astronomy, particularly through his formulation of the three fundamental principles known as Kepler's laws (开普勒定律). These laws describe the motion of planets around the sun and have had a lasting impact on the field of celestial mechanics.The first of Kepler's laws states that planets move in elliptical orbits with the sun at one focus. This was a revolutionary idea at the time, as the prevailing belief was that planetary orbits were circular. The realization that orbits are not perfect circles but rather ellipses changed the way astronomers viewed the cosmos. It provided a more accurate model of how celestial bodies interact and set the stage for further discoveries in gravitational dynamics.The second of Kepler's laws is often referred to as the law of equal areas. It posits that a line segment joining a planet and the sun sweeps out equal areas during equal intervals of time. This means that a planet moves faster when it is closer to the sun and slower when it is farther away. This principle not only explains the varying speeds of planets in their orbits but also emphasizes the influence of the sun's gravitational pull on planetary motion.The third and final of Kepler's laws states that the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit. In simpler terms, this law relates the distance of planets from the sun to their orbital periods. It implies that planets that are farther from the sun take longer to complete an orbit than those that are closer. This relationship is crucial for understanding the dynamics of our solar system and beyond.Understanding Kepler's laws (开普勒定律) is essential not only for students of astronomy but also for anyone interested in the natural sciences. These laws are not just historical artifacts; they are fundamental truths that govern the movements of celestial bodies. They paved the way for Isaac Newton's law of universal gravitation, which further explained the forces at play in the universe.In contemporary times, Kepler's laws continue to be applied in various fields, including astrophysics, aerospace engineering, and even satellite technology. For instance, when launching satellites into orbit, engineers must consider these laws to ensure that they achieve the desired trajectory and maintain stable orbits. Moreover, the exploration of other planets and moons in our solar system relies heavily on the principles outlined by Kepler.In conclusion, Kepler's laws (开普勒定律) represent a monumental leap in our understanding of celestial mechanics. They transformed our perception of the universe and provided a framework for future scientific inquiry. As we continue to explore the cosmos, the significance of these laws remains undiminished, reminding us of the intricate beauty of the natural world and the power of human intellect to unravel its mysteries.

宇宙一直以来都吸引着人类，在众多对我们理解宇宙做出贡献的杰出人物中，约翰内斯·开普勒尤为突出。他在17世纪初的开创性工作为现代天文学奠定了基础，特别是通过他提出的三条基本原则，即开普勒定律（Kepler's laws）。这些定律描述了行星围绕太阳的运动，并对天体力学领域产生了深远的影响。开普勒定律中的第一条指出，行星沿着椭圆轨道运动，太阳位于一个焦点上。这在当时是一个革命性的想法，因为当时普遍认为行星轨道是圆形的。意识到轨道并不是完美的圆形，而是椭圆形，改变了天文学家对宇宙的看法。它提供了一个更准确的模型来描述天体之间的相互作用，并为进一步的重力动态发现奠定了基础。开普勒定律的第二条通常被称为等面积法则。它指出，连接行星和太阳的线段在相等的时间间隔内扫过相等的面积。这意味着行星在靠近太阳时移动得更快，而在远离太阳时移动得更慢。这个原理不仅解释了行星在其轨道上的速度变化，还强调了太阳引力对行星运动的影响。开普勒定律的第三条则指出，一个行星的轨道周期的平方与其轨道的半长轴的立方成正比。简单来说，这条定律将行星距离太阳的远近与其轨道周期联系起来。这意味着离太阳更远的行星完成一个轨道所需的时间比离太阳更近的行星要长。这个关系对于理解我们太阳系及其外部的动力学至关重要。理解开普勒定律不仅对天文学学生至关重要，也对任何对自然科学感兴趣的人都很重要。这些定律不仅仅是历史遗物；它们是支配天体运动的基本真理。它们为艾萨克·牛顿的万有引力定律铺平了道路，后者进一步解释了宇宙中的力量。在当代，开普勒定律继续在多个领域得到应用，包括天体物理学、航空航天工程，甚至卫星技术。例如，在发射卫星进入轨道时，工程师必须考虑这些定律，以确保它们达到预期的轨迹并维持稳定的轨道。此外，我们对太阳系中其他行星和卫星的探索也严重依赖于开普勒所概述的原则。总之，开普勒定律代表了我们对天体力学理解的重大飞跃。它们改变了我们对宇宙的看法，并为未来的科学探究提供了框架。随着我们继续探索宇宙，这些定律的重要性依然未减，提醒我们自然世界的复杂美，以及人类智慧揭示其奥秘的力量。