principal vertical circle

简明释义

观测者子午线

英英释义

例句

1.In navigation, understanding the principal vertical circle is crucial for determining true north.

在导航中，理解主垂直圈对于确定真北至关重要。

2.The principal vertical circle plays a vital role in celestial mechanics and astronomical calculations.

主垂直圈在天体力学和天文计算中起着至关重要的作用。

3.The astronomer aligned the telescope with the principal vertical circle to accurately observe the stars.

天文学家将望远镜对准主垂直圈以准确观察星星。

4.During the experiment, the physicist noted the position of the principal vertical circle to analyze gravitational effects.

在实验中，物理学家记录了主垂直圈的位置以分析重力效应。

5.The surveyor used the principal vertical circle as a reference point for measuring elevation.

测量员以主垂直圈作为测量高度的参考点。

作文

The concept of the principal vertical circle is essential in the field of astronomy and navigation. It refers to an imaginary great circle on the celestial sphere that runs from the north celestial pole to the south celestial pole, intersecting the zenith and nadir of a given location. Understanding this concept is crucial for astronomers and navigators as it helps them determine the position of celestial bodies in relation to the Earth. The principal vertical circle can be visualized as a line that divides the sky into two hemispheres, allowing observers to track the movement of stars and planets throughout the night. In practical terms, the principal vertical circle is used in various applications, including the construction of sundials and the calibration of telescopes. For instance, when setting up a sundial, it is important to align it with the principal vertical circle to ensure accurate timekeeping based on the position of the sun. Similarly, astronomers use the principal vertical circle to calibrate their instruments, ensuring that they can accurately measure the positions of stars and other celestial objects.Furthermore, the principal vertical circle plays a significant role in understanding the Earth's rotation. As the Earth rotates, celestial bodies appear to move across the sky, and their positions can be tracked using the principal vertical circle. This movement is not only important for navigation but also for understanding the changing seasons and the passage of time. By studying the principal vertical circle, scientists can gain insights into the dynamics of our solar system and the universe at large.In addition to its practical applications, the principal vertical circle also has philosophical implications. It represents the intersection of the celestial and terrestrial realms, reminding us of our place in the universe. As we observe the stars and planets moving along this imaginary circle, we are reminded of the vastness of space and the intricate movements that govern our existence. This perspective can inspire a sense of wonder and curiosity about the cosmos, motivating individuals to explore further and deepen their understanding of the universe.In conclusion, the principal vertical circle is a fundamental concept that bridges the gap between astronomy, navigation, and philosophy. Its significance extends beyond technical applications, inviting us to reflect on our relationship with the cosmos. By grasping the importance of the principal vertical circle, we can enhance our understanding of the natural world and our place within it, fostering a deeper appreciation for the beauty and complexity of the universe around us.

“主垂直圆”这一概念在天文学和导航领域中至关重要。它是指一个想象中的大圆，位于天球上，从北天极延伸到南天极，穿过某个特定地点的天顶和天底。理解这一概念对天文学家和导航员来说非常重要，因为它帮助他们确定天体相对于地球的位置。“主垂直圆”可以被视为一条将天空分为两个半球的线，使观察者能够在夜间跟踪恒星和行星的运动。在实际应用中，“主垂直圆”被用于各种场合，包括日晷的构建和望远镜的校准。例如，在设置日晷时，将其与“主垂直圆”对齐是确保根据太阳位置准确计时的重要步骤。同样，天文学家利用“主垂直圆”来校准他们的仪器，确保能够准确测量恒星和其他天体的位置。此外，“主垂直圆”在理解地球自转方面也起着重要作用。随着地球的自转，天体似乎在天空中移动，其位置可以通过“主垂直圆”进行追踪。这种运动不仅对导航很重要，也有助于理解季节变化和时间的流逝。通过研究“主垂直圆”，科学家可以深入了解我们太阳系和整个宇宙的动态。除了其实际应用外，“主垂直圆”还具有哲学意义。它代表了天体与地面领域的交汇，提醒我们在宇宙中的位置。当我们观察恒星和行星沿着这条想象中的圆运动时，我们被宇宙的广阔和支配我们存在的复杂运动所提醒。这种视角可以激发人们对宇宙的敬畏和好奇心，促使个人进一步探索并加深对宇宙的理解。总之，“主垂直圆”是一个基本概念，连接了天文学、导航和哲学。它的重要性超越了技术应用，邀请我们反思与宇宙的关系。通过掌握“主垂直圆”的重要性，我们可以增强对自然世界及其内在联系的理解，培养对周围宇宙的美丽和复杂性的更深层次欣赏。