sextant telescope

简明释义

六分仪望远镜

英英释义

例句

1.During the night watch, the captain relied on the sextant telescope to chart their course.

在夜间值班时，船长依靠六分仪望远镜来绘制航线。

2.The sailor used the sextant telescope to measure the angle between the horizon and a distant star.

水手使用六分仪望远镜来测量地平线与遥远星星之间的角度。

3.He adjusted the sextant telescope carefully to ensure precise readings.

他小心地调整六分仪望远镜以确保读数准确。

4.The sextant telescope is an essential tool for navigators in celestial navigation.

六分仪望远镜是天文导航中航海者必不可少的工具。

5.With the help of a sextant telescope, he was able to accurately determine his position at sea.

借助六分仪望远镜，他能够准确确定自己在海上的位置。

作文

The history of navigation is a fascinating journey through time, marked by the development of various tools that have allowed humanity to traverse the vast oceans. One such remarkable instrument is the sextant telescope, which has played a crucial role in maritime navigation since its invention. The sextant telescope combines the principles of a sextant and a telescope, enabling sailors to measure angles between celestial bodies and the horizon with remarkable accuracy. This ability to determine one's position at sea was revolutionary during the Age of Exploration, when seafarers relied heavily on celestial navigation to guide their voyages.Before the advent of the sextant telescope, navigators used simpler instruments like the astrolabe and quadrant, which had limitations in terms of precision and ease of use. The introduction of the sextant telescope marked a significant advancement in navigational technology. Its design allows for the observation of distant stars and planets, making it possible for sailors to calculate their latitude and longitude with greater confidence.The sextant telescope consists of a graduated arc, usually made of brass or other durable materials, mounted on a frame. A telescope is attached to the instrument, allowing the navigator to sight a celestial object while simultaneously aligning it with the horizon. This dual functionality is what sets the sextant telescope apart from its predecessors. By measuring the angle between the celestial body and the horizon, navigators can then use mathematical calculations to determine their position on the globe.In practice, the use of the sextant telescope requires a good understanding of astronomy and mathematics. Navigators must be familiar with tables that provide the positions of celestial bodies at different times of the year. They also need to account for factors such as atmospheric refraction and the height of the observer above sea level. Despite these challenges, the precision offered by the sextant telescope made it an invaluable tool for explorers, traders, and naval officers alike.The significance of the sextant telescope extends beyond its practical applications; it symbolizes the human spirit of exploration and discovery. Many famous voyages, including those of Captain Cook and Charles Darwin, were made possible thanks to this ingenious instrument. The sextant telescope not only helped navigators reach new lands but also contributed to our understanding of the world and the universe.Today, while modern technology such as GPS has largely replaced traditional navigational tools, the legacy of the sextant telescope endures. It remains a symbol of maritime heritage and is still used by some sailors who appreciate the art of celestial navigation. Moreover, the skills associated with using a sextant telescope are taught in navigation courses, ensuring that future generations understand the principles that guided explorers across uncharted waters.In conclusion, the sextant telescope is more than just a navigational instrument; it is a testament to human ingenuity and the quest for knowledge. Its ability to accurately measure angles and determine positions has shaped the course of history and continues to inspire those who seek to explore the unknown. As we look back on the achievements of our ancestors, we can appreciate the profound impact that the sextant telescope has had on our understanding of navigation and the world around us.

航海史是一段迷人的时光之旅，标志着各种工具的发展，这些工具使人类能够穿越广阔的海洋。其中一个显著的仪器就是六分仪望远镜，自发明以来，它在海洋导航中发挥了至关重要的作用。六分仪望远镜结合了六分仪和望远镜的原理，使水手能够以惊人的准确性测量天体和地平线之间的角度。这种确定海上位置的能力在探索时代是革命性的，当时的航海者主要依靠天文导航来引导他们的航行。在六分仪望远镜问世之前，导航员使用简单的仪器，如天文仪和象限仪，这些仪器在精确度和使用便利性方面存在局限性。六分仪望远镜的引入标志着导航技术的重要进步。它的设计允许观察遥远的星星和行星，使水手能够更有信心地计算他们的纬度和经度。六分仪望远镜由一个刻度弧组成，通常由黄铜或其他耐用材料制成，安装在一个框架上。一个望远镜附加在仪器上，使导航员能够在同时将天体与地平线对齐时观察天体。这种双重功能使得六分仪望远镜与其前身区分开来。通过测量天体与地平线之间的角度，导航员可以使用数学计算来确定他们在地球上的位置。在实践中，使用六分仪望远镜需要对天文学和数学有良好的理解。导航员必须熟悉提供不同时间天体位置的表格。他们还需要考虑大气折射和观察者海拔高度等因素。尽管面临这些挑战，六分仪望远镜所提供的精度使其成为探险者、商人和海军军官等人不可或缺的工具。六分仪望远镜的重要性超出了其实用应用；它象征着人类探索和发现的精神。许多著名的航行，包括库克船长和达尔文的航行，都是得益于这一巧妙的仪器。六分仪望远镜不仅帮助导航员抵达新土地，还促进了我们对世界和宇宙的理解。今天，尽管现代技术如GPS在很大程度上取代了传统导航工具，但六分仪望远镜的遗产仍然存在。它仍然是海洋遗产的象征，仍被一些水手使用，他们欣赏天文导航的艺术。此外，与使用六分仪望远镜相关的技能在导航课程中教授，确保未来几代人理解指导探险者穿越未知水域的原理。总之，六分仪望远镜不仅仅是一个导航工具；它是人类聪明才智和知识追求的证明。它准确测量角度和确定位置的能力塑造了历史的进程，并继续激励那些寻求探索未知的人。当我们回顾祖先的成就时，我们可以欣赏到六分仪望远镜对我们理解导航和周围世界的深远影响。