meridian altitude

简明释义

子午线高度

英英释义

例句

1.The sun reaches its meridian altitude 子午线高度 at noon, providing the highest point in the sky.

太阳在中午达到其meridian altitude 子午线高度，这时是天空中的最高点。

2.During the summer solstice, the meridian altitude 子午线高度 of the sun is significantly higher than in winter.

在夏至期间，太阳的meridian altitude 子午线高度明显高于冬季。

3.Sailors use the meridian altitude 子午线高度 of celestial bodies to find their latitude.

水手利用天体的meridian altitude 子午线高度来确定他们的纬度。

4.Astronomers calculate the meridian altitude 子午线高度 of stars to determine their positions.

天文学家计算星星的meridian altitude 子午线高度以确定它们的位置。

5.Understanding the meridian altitude 子午线高度 is crucial for accurate navigation.

理解meridian altitude 子午线高度对于准确导航至关重要。

作文

The concept of meridian altitude is essential in the fields of astronomy and navigation. It refers to the highest point that a celestial object, such as the sun or a star, reaches in the sky when it crosses the observer's local meridian. This phenomenon occurs at solar noon, which is the time when the sun is at its peak in the sky. Understanding meridian altitude is crucial for various applications, including timekeeping, navigation, and even agriculture.To grasp the significance of meridian altitude, one must first understand what the local meridian is. The local meridian is an imaginary line that runs from the north to the south pole, passing directly overhead through the observer's location. When a celestial body crosses this line, it is said to be at its meridian, and its altitude is measured from the horizon to the object in the sky. The angle of elevation of the sun at this moment is known as meridian altitude.For instance, during the summer solstice, the sun's meridian altitude can reach as high as 90 degrees in some locations, meaning the sun is directly overhead. Conversely, during the winter solstice, the meridian altitude is much lower, reflecting the tilt of the Earth's axis and its orbit around the sun. This seasonal variation in meridian altitude affects not only the amount of sunlight received but also the climate and agricultural practices in different regions.In navigation, particularly for sailors and pilots, understanding meridian altitude is vital for determining latitude. By measuring the altitude of the sun at local noon, navigators can calculate their position on the globe. This method has been used for centuries and remains relevant today, especially in areas where modern technology may fail.Furthermore, the concept of meridian altitude extends beyond just celestial navigation. It also plays a role in architecture and urban planning. For example, architects must consider the meridian altitude of the sun when designing buildings to ensure that they receive adequate sunlight throughout the year. This consideration helps in optimizing energy efficiency and enhancing the comfort of living spaces.In conclusion, the term meridian altitude encapsulates a fundamental aspect of our relationship with the cosmos. It serves as a bridge between celestial mechanics and practical applications in navigation, agriculture, and architecture. By understanding meridian altitude, we gain insights into not only the movements of celestial bodies but also their impact on our daily lives. As we continue to explore the universe, the significance of meridian altitude will remain a crucial element in our quest for knowledge and understanding of the world around us.

“子午线高度”这一概念在天文学和导航领域至关重要。它指的是天体（如太阳或星星）在穿过观察者的当地子午线时，达到的天空中的最高点。这一现象发生在太阳正午，即太阳在天空中处于最高点的时间。理解“子午线高度”对各种应用至关重要，包括计时、导航甚至农业。要理解“子午线高度”的重要性，首先必须了解什么是当地子午线。当地子午线是一个想象中的线，从北极到南极，穿过观察者的位置直达头顶。当天体穿过这条线时，它被称为在其子午线上，其高度是从地平线到天空中物体的测量。此时，太阳的高度角被称为“子午线高度”。例如，在夏至期间，太阳的“子午线高度”在某些地方可以达到90度，这意味着太阳正好在头顶。相反，在冬至期间，“子午线高度”则要低得多，反映了地球轴的倾斜及其围绕太阳的轨道。这种“子午线高度”的季节变化不仅影响阳光的照射量，也影响不同地区的气候和农业实践。在导航中，尤其是对于水手和飞行员来说，理解“子午线高度”对于确定纬度至关重要。通过测量太阳在当地正午的高度，导航员可以计算他们在地球上的位置。这种方法已经使用了几个世纪，并且在现代科技可能失效的地区仍然相关。此外，“子午线高度”的概念不仅限于天体导航。它在建筑和城市规划中也发挥着作用。例如，建筑师在设计建筑时必须考虑太阳的“子午线高度”，以确保建筑全年都能获得足够的阳光。这种考虑有助于优化能源效率，提高居住空间的舒适度。总之，“子午线高度”这一术语概括了我们与宇宙关系的基本方面。它作为天体力学与导航、农业和建筑等实际应用之间的桥梁。通过理解“子午线高度”，我们不仅深入了解天体的运动，还了解它们对我们日常生活的影响。随着我们继续探索宇宙，“子午线高度”的重要性将始终是我们追求知识和理解周围世界的关键要素。