right ascension of meridian

简明释义

子午线赤经

英英释义

例句

1.The astronomer noted the right ascension of meridian 子午线的视星等 to determine the best time for observation.

天文学家记录了right ascension of meridian 子午线的视星等，以确定最佳观察时间。

2.During the lecture, the professor explained how to calculate the right ascension of meridian 子午线的视星等 for celestial objects.

在讲座中，教授解释了如何计算天体的right ascension of meridian 子午线的视星等。

3.Navigators often use the right ascension of meridian 子午线的视星等 to plot their course accurately.

导航员常常使用right ascension of meridian 子午线的视星等来准确绘制航线。

4.The telescope was calibrated to the right ascension of meridian 子午线的视星等 for optimal stargazing.

望远镜已校准至right ascension of meridian 子午线的视星等以获得最佳观星效果。

5.Understanding the right ascension of meridian 子午线的视星等 is crucial for amateur astronomers.

理解right ascension of meridian 子午线的视星等对业余天文学家至关重要。

作文

The concept of celestial navigation has fascinated humans for centuries. Among the various elements that contribute to understanding the night sky, the term right ascension of meridian plays a crucial role. This term refers to the angular distance of a celestial object measured along the celestial equator from the vernal equinox to the point where the object crosses the observer's meridian. In simpler terms, it helps astronomers and navigators determine the position of stars and planets in the sky. To grasp the significance of right ascension of meridian, one must first understand the coordinate system used in astronomy. Just as we use latitude and longitude on Earth to pinpoint locations, astronomers use a similar system in the celestial sphere. The celestial sphere is an imaginary sphere that surrounds the Earth, onto which all celestial bodies are projected. In this celestial coordinate system, the right ascension of meridian is analogous to longitude. It is usually measured in hours, minutes, and seconds, with one hour corresponding to 15 degrees of rotation. This measurement is essential for locating stars and other celestial objects at any given time. For instance, if an astronomer knows the right ascension of meridian of a particular star, they can easily find it in the night sky by knowing the local time and date. The importance of right ascension of meridian extends beyond mere observation; it is vital for navigation. Sailors and explorers have relied on the stars for guidance throughout history. By understanding the right ascension of meridian of certain key stars, navigators could determine their position at sea. For example, the North Star, Polaris, has a well-defined right ascension of meridian, making it a reliable reference point for those traveling in the Northern Hemisphere. Moreover, the right ascension of meridian is also crucial for modern astronomical research. Telescopes and observatories utilize this measurement to track the movement of celestial bodies. With the advent of technology, astronomers can now calculate the right ascension of meridian with incredible precision, allowing for more accurate predictions of celestial events such as eclipses or planetary alignments. In conclusion, the term right ascension of meridian encapsulates a fundamental aspect of celestial navigation and astronomy. It serves as a bridge between ancient navigation techniques and modern scientific research. Understanding this concept not only enhances our appreciation of the universe but also connects us to the rich history of exploration and discovery. As we continue to explore the cosmos, the right ascension of meridian will undoubtedly remain a vital tool for astronomers and navigators alike.

天文导航的概念几百年来一直吸引着人类。在理解夜空的各种元素中，术语子午线的赤经扮演着至关重要的角色。这个术语是指从春分点到天体穿过观察者的子午线的角距离，沿着天球赤道测量。简单来说，它帮助天文学家和导航员确定星星和行星在天空中的位置。为了理解子午线的赤经的重要性，首先必须了解在天文学中使用的坐标系统。就像我们在地球上使用纬度和经度来定位一样，天文学家在天球中使用类似的系统。天球是一个想象中的球体，围绕着地球，所有的天体都被投影到这个球体上。在这个天球坐标系统中，子午线的赤经类似于经度。它通常以小时、分钟和秒为单位测量，一个小时对应15度的旋转。这一测量对于在任何给定时间定位星星和其他天体至关重要。例如，如果天文学家知道某颗星星的子午线的赤经，他们就可以通过知道当地的时间和日期轻松找到它。子午线的赤经的重要性不仅限于观察；它对导航也至关重要。航海者和探险家在历史上一直依靠星星进行指导。通过了解某些关键星星的子午线的赤经，导航员能够确定他们在海上的位置。例如，北极星的子午线的赤经非常明确，使其成为在北半球旅行者可靠的参考点。此外，子午线的赤经对于现代天文研究也至关重要。望远镜和天文台利用这一测量来追踪天体的运动。随着技术的发展，天文学家现在可以以惊人的精确度计算子午线的赤经，使得更准确地预测日食或行星排列等天文事件成为可能。总之，术语子午线的赤经概括了天文导航和天文学的基本方面。它作为古代导航技术与现代科学研究之间的桥梁。理解这一概念不仅增强了我们对宇宙的欣赏，还将我们与探索和发现的丰富历史联系在一起。随着我们继续探索宇宙，子午线的赤经无疑将继续成为天文学家和导航员的重要工具。