angle sextant

简明释义

测量六分仪

英英释义

例句

1.In astronomy classes, students learn how to use an angle sextant for celestial navigation.

在天文学课程中，学生学习如何使用角度六分仪进行天体导航。

2.The sailor used the angle sextant to measure the height of the sun above the horizon.

水手使用角度六分仪测量太阳在地平线上的高度。

3.The angle sextant helped the explorer chart new territories by measuring angles between landmarks.

这个角度六分仪帮助探险者通过测量地标之间的角度来绘制新领土。

4.An angle sextant is essential for determining latitude at sea.

在海上确定纬度时，角度六分仪是必不可少的。

5.To navigate accurately, the captain relied on his angle sextant during the night.

为了精确导航，船长在夜间依赖他的角度六分仪。

作文

The term angle sextant refers to a navigational instrument that is primarily used for measuring angles in astronomy and navigation. This device has played a crucial role in maritime exploration, enabling sailors to determine their position at sea by measuring the angle between celestial bodies and the horizon. The angle sextant consists of a graduated arc and a movable arm, known as an index arm, which allows for precise angle measurements. By using this instrument, navigators can calculate their latitude and longitude, which are essential for safe and accurate travel across vast oceans.Historically, the angle sextant evolved from earlier instruments like the astrolabe and the cross-staff. These predecessors laid the groundwork for the development of more sophisticated tools that could provide more accurate readings. The invention of the angle sextant marked a significant advancement in navigation technology during the Age of Exploration. Sailors relied heavily on this instrument to chart their courses and avoid treacherous waters, making it an indispensable tool in their voyages.The usage of the angle sextant involves several steps, starting with the alignment of the instrument with a celestial body, such as the sun or a star. The navigator looks through the telescope attached to the sextant and adjusts the index arm until the image of the celestial body aligns with the horizon. Once the alignment is achieved, the angle can be read off the graduated scale, providing vital information for navigation.In modern times, while GPS technology has largely replaced the angle sextant for everyday navigation, this instrument remains relevant in specific contexts. For instance, it is still taught in maritime academies as part of traditional navigation courses, ensuring that future generations of sailors understand the fundamentals of celestial navigation. Additionally, some enthusiasts and traditionalists prefer to use the angle sextant for its historical significance and the skills it requires.Moreover, the angle sextant serves as a symbol of human ingenuity and the quest for exploration. It represents the lengths to which people have gone to understand their world and navigate through the unknown. The mastery of this instrument requires not only technical skill but also a deep understanding of astronomy and mathematics, making it a fascinating subject for study.In conclusion, the angle sextant is much more than just a piece of equipment; it embodies the spirit of exploration and the pursuit of knowledge. Whether used in the past for grand voyages across the seas or studied today in educational settings, its importance in the field of navigation cannot be overstated. The legacy of the angle sextant continues to influence modern navigation practices, reminding us of the enduring connection between humanity and the stars above.

“角度六分仪”一词指的是一种导航仪器，主要用于测量天文学和导航中的角度。这种设备在海洋探索中发挥了至关重要的作用，使水手能够通过测量天体与地平线之间的角度来确定他们在海上的位置。“角度六分仪”由一个刻度弧和一个可移动的臂（称为指针臂）组成，允许进行精确的角度测量。通过使用这种仪器，导航员可以计算他们的纬度和经度，这对于在广阔的海洋中安全和准确地旅行至关重要。历史上，“角度六分仪”是从早期仪器如天文仪和十字杆发展而来的。这些前身为更复杂的工具的发展奠定了基础，可以提供更准确的读数。“角度六分仪”的发明标志着航海技术在探索时代的重大进步。水手们在航行中重度依赖这一仪器来绘制航线并避免危险水域，使其成为他们航行中不可或缺的工具。使用“角度六分仪”涉及几个步骤，首先是将仪器与天体（如太阳或星星）对齐。导航员通过连接到六分仪的望远镜观察，并调整指针臂，直到天体的图像与地平线对齐。一旦对齐完成，就可以从刻度盘上读取角度，为导航提供重要信息。在现代，虽然GPS技术在日常导航中已大大取代了“角度六分仪”，但在特定情况下，这种仪器仍然相关。例如，它仍然在海事学院作为传统导航课程的一部分进行教学，确保未来几代水手理解天文导航的基本原理。此外，一些爱好者和传统主义者更喜欢使用“角度六分仪”，因为它的历史意义和所需的技能。此外，“角度六分仪”作为人类聪明才智和探索追求的象征。它代表了人们为了理解世界和在未知中航行而付出的努力。掌握这一仪器不仅需要技术技能，还需要对天文学和数学的深刻理解，使其成为一个引人入胜的研究主题。总之，“角度六分仪”不仅仅是一件设备；它体现了探索精神和对知识的追求。无论是在过去用于跨海的大航行，还是今天在教育环境中学习，其在导航领域的重要性都不容小觑。“角度六分仪”的遗产继续影响现代导航实践，提醒我们人类与天空之间持久的联系。