observed longitude

简明释义

观测经度

英英释义

例句

1.To ensure safety, the crew frequently checked the observed longitude 观测经度.

为了确保安全，船员们频繁检查观测经度。

2.The sailor recorded the observed longitude 观测经度 to navigate accurately.

水手记录了观测经度以便准确导航。

3.The observed longitude 观测经度 was crucial for mapping the new territory.

这条观测经度对新领土的制图至关重要。

4.Using a sextant, he determined his observed longitude 观测经度 during the journey.

他在旅途中使用六分仪确定了他的观测经度。

5.The captain adjusted the course based on the observed longitude 观测经度 readings.

船长根据观测经度的读数调整了航向。

作文

The concept of observed longitude is crucial in the fields of navigation and astronomy. It refers to the angular measurement of a point's position east or west of a designated prime meridian, typically the Greenwich Meridian. Understanding observed longitude is essential for sailors, pilots, and anyone involved in geographic positioning. In this essay, I will explore the significance of observed longitude and its applications in various fields.Historically, determining one’s position at sea was a significant challenge. Sailors relied on celestial navigation, using the stars and planets to find their way across vast oceans. The ability to measure observed longitude accurately allowed them to pinpoint their location relative to the Earth’s surface. This was particularly important because even a small error in longitude could lead to disastrous consequences, such as missing a harbor or colliding with land.To measure observed longitude, navigators would use tools like the sextant to observe the angle of celestial bodies above the horizon. By comparing these observations with published tables of celestial events, they could calculate their longitude. This practice required a precise understanding of time, as the Earth rotates 15 degrees of longitude every hour. Therefore, accurate timekeeping was essential for determining observed longitude. The invention of the marine chronometer in the 18th century revolutionized navigation, allowing sailors to keep accurate time at sea and significantly improving their ability to determine longitude.In modern times, the importance of observed longitude extends beyond maritime navigation. It plays a vital role in aviation, where pilots must maintain precise positions while flying. Air traffic control relies on accurate longitude measurements to manage flight paths and ensure safety in crowded airspace. Additionally, observed longitude is fundamental in global positioning systems (GPS), which have become an integral part of everyday life. GPS technology uses satellites to provide real-time location data, allowing users to navigate efficiently in cars, on foot, or even while hiking in remote areas.Moreover, observed longitude has implications in scientific research. Astronomers use it to track celestial objects and phenomena. By knowing the observed longitude of telescopes and observatories, researchers can coordinate observations and share data across different locations. This collaboration enhances our understanding of the universe and contributes to advancements in astrophysics.Another area where observed longitude is significant is in the context of time zones. The world is divided into various time zones based on longitudinal divisions, with each zone roughly corresponding to 15 degrees of longitude. This division facilitates synchronized timekeeping across different regions, making it easier for businesses to operate internationally and for individuals to communicate across distances.In conclusion, the term observed longitude encompasses a critical aspect of navigation, astronomy, and global positioning. Its historical significance laid the groundwork for modern navigation techniques, while its contemporary applications continue to shape our understanding of geography and time. As technology evolves, the methods of measuring and utilizing observed longitude will undoubtedly advance, further enhancing our ability to navigate the complexities of our world.

“观察经度”这一概念在导航和天文学领域至关重要。它指的是一个点相对于指定的本初子午线（通常是格林威治子午线）向东或向西的位置的角度测量。理解“观察经度”对水手、飞行员以及任何涉及地理定位的人来说都是必不可少的。在这篇文章中，我将探讨“观察经度”的重要性及其在各个领域的应用。历史上，确定海上的位置曾是一个重大挑战。水手依靠天体导航，利用星星和行星在广阔的海洋中找到方向。准确测量“观察经度”的能力使他们能够确定自己相对于地球表面的位置。这一点尤其重要，因为即使是经度上的小错误也可能导致灾难性的后果，比如错过港口或与陆地相撞。为了测量“观察经度”，导航员会使用六分仪观察天体在地平线上的角度。通过将这些观测结果与已发布的天文事件表进行比较，他们可以计算出自己的经度。这一过程需要对时间有精确的理解，因为地球每小时旋转15度的经度。因此，准确的计时对确定“观察经度”至关重要。18世纪海洋计时器的发明彻底改变了航海，使水手能够在海上保持准确的时间，从而显著提高了他们确定经度的能力。在现代， “观察经度”的重要性超出了海洋导航的范围。它在航空领域发挥着至关重要的作用，飞行员必须在飞行过程中保持精确的位置。空中交通管制依赖于准确的经度测量来管理航线，并确保在拥挤的空域中安全。此外，“观察经度”在全球定位系统（GPS）中也是基础，这项技术已经成为日常生活的重要组成部分。GPS技术利用卫星提供实时位置数据，使用户能够在汽车、步行甚至在偏远地区远足时高效导航。此外，“观察经度”在科学研究中也具有重要意义。天文学家利用它来追踪天体和现象。通过了解望远镜和天文台的“观察经度”，研究人员可以协调观测并共享数据。这种合作增强了我们对宇宙的理解，并促进了天体物理学的进步。“观察经度”在时区的背景下也具有重要意义。世界被划分为不同的时区，基于经度划分，每个时区大致对应于15度的经度。这种划分便利了不同地区的同步计时，使企业能够在国际间运作，个人能够跨越距离进行沟通。总之，“观察经度”这一术语涵盖了导航、天文学和全球定位的关键方面。它的历史重要性为现代导航技术奠定了基础，而其当代应用继续塑造我们对地理和时间的理解。随着技术的发展，测量和利用“观察经度”的方法无疑会不断进步，进一步增强我们在复杂世界中的导航能力。