meridian altitude above pole

简明释义

上中天高度

英英释义

例句

1.During the equinox, the meridian altitude above pole can help predict solar events.

在春分时，极点的子午线高度可以帮助预测太阳事件。

2.The meridian altitude above pole varies with seasons, affecting satellite positioning.

随着季节变化，极点的子午线高度会有所不同，影响卫星定位。

3.Sailors use the meridian altitude above pole for celestial navigation.

水手们利用极点的子午线高度进行天文导航。

4.Understanding the meridian altitude above pole is crucial for accurate navigation.

理解极点的子午线高度对于准确导航至关重要。

5.The astronomer calculated the meridian altitude above pole to determine the best time for observation.

天文学家计算了极点的子午线高度以确定最佳观察时间。

作文

The concept of celestial navigation has fascinated humanity for centuries, and understanding the principles behind it is essential for anyone interested in astronomy or navigation. One of the fundamental concepts in this field is the idea of the meridian altitude above pole, which refers to the highest point that a celestial body reaches in the sky when it crosses the local meridian at a specific location. This concept is crucial for navigators and astronomers alike, as it provides valuable information about the position of celestial bodies in relation to the Earth. To comprehend the meridian altitude above pole, one must first understand what a meridian is. A meridian is an imaginary line that runs from the North Pole to the South Pole, connecting points of equal longitude. When a celestial body, such as the sun or a star, crosses this line, it reaches its highest point in the sky for that particular observer's location. This moment is known as 'transit', and the altitude at which the body transits is what we refer to as the meridian altitude above pole.The significance of knowing the meridian altitude above pole cannot be overstated. For sailors navigating the open seas, being able to determine their latitude and longitude accurately is vital for safe passage. By observing the altitude of celestial bodies at transit, navigators can calculate their position with remarkable precision. Similarly, astronomers rely on this concept to track the movements of stars and planets, allowing them to predict events such as eclipses and conjunctions.Moreover, the meridian altitude above pole varies depending on the observer's geographical location. For instance, at the equator, the sun reaches a maximum altitude of 90 degrees at noon during the equinoxes. However, as one moves towards the poles, this altitude decreases. At the North Pole, the sun never sets during summer, but it also never rises during winter. Understanding these variations is crucial for both practical navigation and theoretical astronomy.In addition to its practical applications, the meridian altitude above pole also invites deeper philosophical reflections about our place in the universe. The movement of celestial bodies across the sky has inspired countless cultures throughout history, leading to the development of calendars, myths, and scientific inquiry. As we observe the heavens and understand the mechanics behind these movements, we gain insight not only into the cosmos but also into our own existence.In conclusion, the concept of the meridian altitude above pole serves as a bridge between the realms of navigation and astronomy. It encapsulates the intricate relationship between celestial bodies and our planet, providing essential information for those who seek to understand the skies above us. Whether you are a seasoned navigator or a curious stargazer, grasping the significance of this concept enriches your appreciation of the universe and enhances your ability to navigate through both land and sea. Understanding the meridian altitude above pole is not just about numbers and angles; it is about connecting with the vastness of space and our role within it.

天文导航的概念吸引了人类几个世纪的兴趣，理解其背后的原理对于任何对天文学或导航感兴趣的人来说都是至关重要的。在这个领域中，一个基本的概念是极地上方的子午线高度，它指的是一个天体在特定地点穿过当地子午线时在天空中达到的最高点。这个概念对于导航员和天文学家而言都至关重要，因为它提供了有关天体相对于地球位置的宝贵信息。要理解极地上方的子午线高度，首先必须了解什么是子午线。子午线是一条从北极到南极的想象线，连接着相同经度的点。当一个天体，如太阳或星星，穿过这条线时，它会在该观察者的位置达到天空中的最高点。这个时刻被称为“过境”，而天体过境时的高度就是我们所称的极地上方的子午线高度。了解极地上方的子午线高度的重要性不言而喻。对于在开放海域航行的水手来说，准确确定他们的纬度和经度对于安全航行至关重要。通过观察天体在过境时的高度，导航员可以以惊人的精确度计算出他们的位置。同样，天文学家依赖这一概念来追踪恒星和行星的运动，使他们能够预测日食和合相等事件。此外，极地上方的子午线高度因观察者的地理位置而异。例如，在赤道，太阳在春分和秋分时正午达到90度的最大高度。然而，随着向极地移动，这个高度会降低。在北极，太阳在夏季永不落下，但在冬季也永不升起。理解这些变化对于实际导航和理论天文学都至关重要。除了其实际应用，极地上方的子午线高度还引发了关于我们在宇宙中位置的更深层次的哲学思考。天体在天空中的运动激励了历史上无数文化的发展，导致了日历、神话和科学探究的形成。当我们观察天空并理解这些运动背后的机制时，我们不仅获得了对宇宙的洞察，也对自己的存在有了更深的理解。总之，极地上方的子午线高度这一概念在导航和天文学的领域之间架起了一座桥梁。它概括了天体与我们地球之间复杂的关系，为那些寻求理解我们头顶天空的人提供了必要的信息。无论你是经验丰富的导航员还是好奇的观星者，掌握这一概念的意义都能丰富你对宇宙的欣赏，并增强你在陆地和海洋中导航的能力。理解极地上方的子午线高度不仅仅关乎数字和角度；它还关乎与空间的广阔联系以及我们在其中的角色。