elliptic motion

简明释义

椭圆运动

英英释义

例句

1.The planets in our solar system exhibit elliptic motion, which means they travel in elliptical orbits around the sun.

我们太阳系中的行星表现出椭圆运动，这意味着它们在太阳周围沿着椭圆轨道运行。

2.The concept of elliptic motion was first formulated by Johannes Kepler in the 17th century.

椭圆运动的概念最早由约翰内斯·开普勒在17世纪提出。

3.Astronomers use elliptic motion to explain the varying speeds of celestial bodies as they orbit.

天文学家使用椭圆运动来解释天体在轨道上速度的变化。

4.Understanding elliptic motion is crucial for predicting satellite paths accurately.

理解椭圆运动对于准确预测卫星轨道至关重要。

5.In physics, elliptic motion describes the motion of objects under the influence of gravity in a two-body system.

在物理学中，椭圆运动描述了在双体系统中受重力影响的物体运动。

作文

The concept of elliptic motion refers to the movement of celestial bodies in an elliptical orbit around a focal point, usually a star or a planet. This phenomenon was first described by Johannes Kepler in the early 17th century, who formulated his three laws of planetary motion. The first law states that planets move in elliptical orbits with the sun at one of the foci. Understanding elliptic motion is crucial for astronomers and physicists as it provides insight into the dynamics of our solar system and beyond.To grasp the significance of elliptic motion, one must first understand what an ellipse is. An ellipse is a closed curve that resembles a stretched circle. It has two focal points, and the sum of the distances from any point on the ellipse to these two foci is constant. This unique property allows celestial bodies to maintain stable orbits, which are essential for the gravitational interactions between them.In practical terms, elliptic motion explains why planets do not travel in perfect circles. For instance, Earth’s orbit around the sun is elliptical, meaning that there are times when it is closer to the sun and times when it is farther away. This variation in distance affects the amount of solar energy received by the Earth, contributing to seasonal changes.Moreover, elliptic motion is not limited to planets. Comets, moons, and artificial satellites also follow elliptical paths. For example, Halley's Comet takes approximately 76 years to complete its orbit around the sun, showcasing the long-term effects of elliptic motion on celestial bodies. Understanding these orbits helps scientists predict when these objects will be visible from Earth, enhancing our ability to observe and study them.The implications of elliptic motion extend beyond mere observation. In the field of space exploration, engineers must account for the elliptical orbits of spacecraft when planning missions. For instance, when launching a satellite, engineers often use a technique called a Hohmann transfer orbit, which utilizes elliptic motion principles to efficiently transfer a spacecraft from one orbit to another. This method saves fuel and time, demonstrating the practical applications of understanding elliptical trajectories.Additionally, elliptic motion plays a vital role in gravitational physics. Isaac Newton's law of universal gravitation complements Kepler's observations by providing a mathematical framework for understanding how forces act between celestial bodies. The relationship between mass, distance, and gravitational force helps explain why planets and other objects follow elliptical paths rather than straight lines.In conclusion, elliptic motion is a fundamental concept in astronomy and physics that describes the elliptical orbits of celestial bodies. Its understanding is essential for predicting the positions of planets, planning space missions, and comprehending the gravitational interactions that govern the universe. As we continue to explore the cosmos, the principles of elliptic motion will remain a cornerstone of our understanding of the natural world.

“椭圆运动”这一概念指的是天体围绕焦点（通常是恒星或行星）以椭圆轨道运动的现象。这一现象最早由约翰内斯·开普勒在17世纪初描述，他制定了行星运动的三大定律。第一定律指出，行星以椭圆轨道运动，太阳位于其中一个焦点。理解“椭圆运动”对天文学家和物理学家至关重要，因为它为我们提供了关于太阳系及其外部动态的深刻见解。要理解“椭圆运动”的重要性，首先必须了解什么是椭圆。椭圆是一种封闭曲线，形状类似于拉长的圆。它有两个焦点，任何椭圆上某一点到这两个焦点的距离之和是恒定的。这一独特性质使得天体能够维持稳定的轨道，这对于它们之间的引力相互作用至关重要。在实际应用中，“椭圆运动”解释了行星为何不会沿着完美的圆形轨道运动。例如，地球围绕太阳的轨道是椭圆的，这意味着在某些时候它离太阳更近，而在另一些时候则更远。这种距离的变化影响了地球接收到的太阳能量，从而导致季节变化。此外，“椭圆运动”不仅限于行星。彗星、卫星和人造卫星也遵循椭圆路径。例如，哈雷彗星大约需要76年才能完成一次绕太阳的轨道，展示了“椭圆运动”对天体的长期影响。理解这些轨道有助于科学家预测这些物体何时会在地球上可见，从而增强我们观察和研究它们的能力。“椭圆运动”的意义超越了单纯的观察。在太空探索领域，工程师在规划任务时必须考虑航天器的椭圆轨道。例如，在发射卫星时，工程师通常使用一种称为霍曼转移轨道的技术，该技术利用“椭圆运动”的原理高效地将航天器从一个轨道转移到另一个轨道。这种方法节省了燃料和时间，展示了理解椭圆轨迹的实际应用。此外，“椭圆运动”在引力物理学中也起着至关重要的作用。艾萨克·牛顿的万有引力定律与开普勒的观察相辅相成，提供了理解天体之间力量作用的数学框架。质量、距离和引力之间的关系有助于解释为何行星和其他物体遵循椭圆路径而非直线。总之，“椭圆运动”是天文学和物理学中的一个基本概念，描述了天体的椭圆轨道。理解这一概念对于预测行星的位置、规划太空任务以及理解支配宇宙的引力相互作用至关重要。随着我们继续探索宇宙，“椭圆运动”的原理将始终是我们理解自然世界的基石。