ecliptic meridian

简明释义

黄经圈;

英英释义

例句

1.Navigators use the ecliptic meridian to help determine their latitude while at sea.

航海者使用黄道子午线来帮助确定他们在海上的纬度。

2.The position of the sun can be determined by observing its location relative to the ecliptic meridian.

通过观察太阳相对于黄道子午线的位置，可以确定其位置。

3.The ecliptic meridian serves as a reference for mapping the positions of stars and planets.

黄道子午线作为绘制星星和行星位置的参考。

4.During the equinox, the sun crosses the ecliptic meridian, marking a significant astronomical event.

在春分时，太阳穿过黄道子午线，标志着一个重要的天文事件。

5.Astronomers often track celestial events along the ecliptic meridian to predict planetary alignments.

天文学家经常沿着黄道子午线追踪天文事件，以预测行星的排列。

作文

The concept of the ecliptic meridian is fundamental in understanding celestial mechanics and astronomy. The ecliptic meridian refers to an imaginary line in the sky that runs from the North Celestial Pole to the South Celestial Pole, intersecting the ecliptic plane at a right angle. This plane is defined by the Earth's orbit around the Sun, and it represents the path that the Sun appears to follow over the course of a year. Understanding this concept is crucial for astronomers and anyone interested in the movements of celestial bodies.To grasp the significance of the ecliptic meridian, one must first understand the ecliptic itself. The ecliptic is essentially the 'flat' plane of our solar system, where most planets orbit the Sun. It is tilted at an angle of approximately 23.5 degrees relative to the celestial equator. This tilt is responsible for the changing seasons on Earth as well as the varying positions of the Sun in the sky throughout the year. The ecliptic meridian serves as a reference point for locating celestial objects in relation to the ecliptic.When we observe the night sky, the positions of stars and planets can be mapped using coordinates similar to latitude and longitude on Earth. The ecliptic meridian provides a vertical reference line for this coordinate system. Objects located along the ecliptic are easier to track and predict because they follow a predictable path across the sky. This is particularly important for astronomers when calculating the positions of planets and other celestial phenomena.Additionally, the ecliptic meridian plays a significant role in various astronomical events such as eclipses. Eclipses occur when the Sun, Moon, and Earth align in a particular way, and understanding the geometry involving the ecliptic meridian is crucial for predicting these events. For instance, during a solar eclipse, the Moon passes between the Earth and the Sun, and the alignment with the ecliptic meridian determines whether the eclipse will be total, partial, or annular.In practical terms, the ecliptic meridian also aids in navigation and timekeeping. Historically, sailors and explorers relied on celestial navigation, using the positions of stars and planets to determine their location at sea. The ecliptic meridian helps in establishing a celestial reference frame that can be used for this purpose. Furthermore, modern timekeeping systems, including the definition of time zones, have roots in the movement of celestial bodies, which are intrinsically linked to the ecliptic meridian.In conclusion, the ecliptic meridian is a crucial concept in astronomy that enhances our understanding of the universe. It serves as a reference point for mapping the positions of celestial bodies, predicting astronomical events, and aiding in navigation. As we continue to explore the cosmos, the ecliptic meridian will remain an essential tool for astronomers and enthusiasts alike, offering insights into the complex dance of the objects that inhabit our sky.

“黄道子午线”的概念在理解天体力学和天文学中至关重要。“黄道子午线”指的是天空中一条虚拟的线，从北天极延伸到南天极，与黄道面呈直角相交。该平面是由地球围绕太阳的轨道定义的，代表着太阳在一年中的运行路径。理解这个概念对天文学家和任何对天体运动感兴趣的人来说都是至关重要的。要理解“黄道子午线”的重要性，首先必须理解黄道本身。黄道本质上是我们太阳系的“平面”，大多数行星围绕太阳运行。它与天赤道之间的倾斜角度约为23.5度。这种倾斜是导致地球季节变化以及太阳在一年中在天空中位置变化的原因。“黄道子午线”作为定位天体的参考点，与黄道相关联。当我们观察夜空时，恒星和行星的位置可以使用类似于地球上经纬度的坐标进行映射。“黄道子午线”为这个坐标系统提供了一个垂直的参考线。位于黄道上的天体由于遵循可预测的天空路径，因此更容易追踪和预测。这对于天文学家计算行星和其他天体现象的位置尤为重要。此外，“黄道子午线”在各种天文事件中也发挥着重要作用，例如日食。日食发生在太阳、月亮和地球以特定方式对齐时，理解涉及“黄道子午线”的几何关系对于预测这些事件至关重要。例如，在一次日食期间，月亮位于地球和太阳之间，与“黄道子午线”的对齐决定了日食是完全的、部分的还是环形的。在实际应用中，“黄道子午线”还帮助导航和计时。历史上，水手和探险者依靠天体导航，利用恒星和行星的位置来确定他们在海上的位置。“黄道子午线”有助于建立一个可以用于此目的的天体参考框架。此外，现代时间计量系统，包括时区的定义，根植于天体的运动，这与“黄道子午线”密切相关。总之，“黄道子午线”是天文学中一个至关重要的概念，增强了我们对宇宙的理解。它作为映射天体位置、预测天文事件和辅助导航的参考点。随着我们继续探索宇宙，“黄道子午线”将始终是天文学家和爱好者的重要工具，为我们提供对居住在天空中的物体复杂舞蹈的洞察。