observed zenith distance

简明释义

观测顶距

英英释义

例句

1.The observed zenith distance 观测天顶距离 is crucial for calculating latitude during a celestial navigation exercise.

在天文导航练习中，观测天顶距离 observed zenith distance对于计算纬度至关重要。

2.Using a sextant, the navigator measured the observed zenith distance 观测天顶距离 of the sun at noon.

导航员使用六分仪测量了中午太阳的观测天顶距离 observed zenith distance。

3.The astronomer calculated the observed zenith distance 观测天顶距离 of the star to determine its position in the sky.

天文学家计算了这颗星星的观测天顶距离 observed zenith distance以确定其在天空中的位置。

4.The observed zenith distance 观测天顶距离 can vary based on atmospheric conditions.

由于大气条件的不同，观测天顶距离 observed zenith distance可能会有所变化。

5.In his report, he noted the observed zenith distance 观测天顶距离 of various celestial bodies.

在他的报告中，他记录了各种天体的观测天顶距离 observed zenith distance。

作文

The concept of observed zenith distance is essential in the field of astronomy and navigation. It refers to the angle between a celestial object and the observer's zenith, which is the point in the sky directly above them. Understanding this concept is crucial for accurate astronomical observations and for determining one's position on the Earth's surface.When astronomers observe a star or planet, they measure its altitude, which is the angle between the object and the horizon. The observed zenith distance is derived from this measurement. By knowing the altitude, one can easily calculate the observed zenith distance using the formula: Observed Zenith Distance = 90 degrees - Altitude.This relationship highlights the importance of the zenith as a reference point in celestial navigation. The zenith is not only a point of reference but also serves as a guide for understanding the positioning of celestial bodies. For navigators, knowing the observed zenith distance allows them to determine their latitude by comparing the angle of a celestial object with their local horizon.In practical terms, let's consider a sailor at sea who wants to use the stars for navigation. By measuring the altitude of a known star, the sailor can calculate the observed zenith distance. This information, combined with time and date, can help the sailor find their exact position on Earth. This method has been used for centuries and remains relevant even in today's technologically advanced world.Furthermore, the observed zenith distance is not only significant for sailors but also for astronomers conducting research. When observing distant galaxies or other celestial phenomena, astronomers need precise measurements to understand their structure and behavior. The accuracy of these observations often depends on correctly calculating the observed zenith distance.In addition, the observed zenith distance can be influenced by various atmospheric conditions. Factors such as temperature, pressure, and humidity can affect the light path from the celestial object to the observer. Therefore, astronomers must account for these variables to ensure their measurements are as accurate as possible. This adjustment process adds another layer of complexity to the observation, demonstrating the intricacies involved in celestial navigation and astronomy.Moreover, the observed zenith distance plays a role in the development of modern technology. GPS and other satellite-based systems rely on principles of triangulation that are fundamentally linked to concepts like zenith distance. The calculations performed by these systems echo the traditional methods used by navigators of the past, showcasing the enduring relevance of the observed zenith distance in our understanding of space and navigation.In conclusion, the observed zenith distance is a vital concept that bridges the gap between ancient navigational techniques and modern astronomical research. Its applications extend beyond mere measurements; they encompass a deeper understanding of our position in the universe. As we continue to explore the cosmos, the significance of the observed zenith distance will remain a cornerstone of both navigation and astronomy, helping us navigate not only the seas but also the vastness of space.

“观察天顶距离”这一概念在天文学和导航领域至关重要。它指的是天体与观察者天顶之间的角度，天顶是指在他们头顶正上方的天空点。理解这一概念对于准确的天文观测和确定地球表面位置至关重要。当天文学家观察恒星或行星时，他们测量其高度，即该天体与地平线之间的角度。“观察天顶距离”是从这个测量中得出的。通过知道高度，可以使用以下公式轻松计算“观察天顶距离”：观察天顶距离 = 90度 - 高度。这个关系突显了天顶作为天体导航参考点的重要性。天顶不仅是一个参考点，还作为理解天体定位的指南。对于导航员来说，知道“观察天顶距离”可以让他们通过比较天体的角度与当地地平线来确定自己的纬度。在实际操作中，让我们考虑一位在海上的水手，他想利用星星进行导航。通过测量已知星星的高度，水手可以计算出“观察天顶距离”。这个信息结合时间和日期，可以帮助水手找到自己在地球上的确切位置。这种方法已经被使用了几个世纪，即使在今天这个技术先进的世界中仍然具有相关性。此外，“观察天顶距离”不仅对水手重要，对于进行研究的天文学家也同样重要。当观察遥远的星系或其他天体现象时，天文学家需要精确的测量来理解它们的结构和行为。这些观察的准确性往往依赖于正确计算“观察天顶距离”。此外，“观察天顶距离”可能会受到各种大气条件的影响。温度、压力和湿度等因素会影响从天体到观察者的光路径。因此，天文学家必须考虑这些变量，以确保他们的测量尽可能准确。这一调整过程为观察增加了另一层复杂性，展示了天体导航和天文学中的复杂性。此外，“观察天顶距离”在现代技术的发展中也发挥着作用。GPS和其他基于卫星的系统依赖于与天顶距离相关的三角测量原理。这些系统所执行的计算与过去航海家使用的传统方法相呼应，展示了“观察天顶距离”在我们对空间和导航理解中的持久相关性。总之，“观察天顶距离”是一个重要的概念，架起了古代导航技术与现代天文研究之间的桥梁。它的应用超越了单纯的测量；它们包含了对我们在宇宙中位置的更深刻理解。随着我们继续探索宇宙，“观察天顶距离”的重要性将始终是导航和天文学的基石，帮助我们不仅在海洋中航行，也在浩瀚的太空中航行。