longitude by equal altitude

简明释义

等高度天体求经度

英英释义

例句

1.Using longitude by equal altitude, they pinpointed their location just off the coast.

他们利用等高线经度准确定位了自己就在海岸附近。

2.The concept of longitude by equal altitude is crucial for celestial navigation.

对于天文导航来说，等高线经度的概念至关重要。

3.The sailors used the method of longitude by equal altitude to determine their position at sea.

水手们使用等高线经度的方法来确定他们在海上的位置。

4.By applying longitude by equal altitude, the navigator was able to chart a more accurate course.

通过应用等高线经度，导航员能够绘制出更准确的航线。

5.The captain instructed the crew to apply longitude by equal altitude during their voyage.

船长指示船员在航行中应用等高线经度。

作文

The concept of navigation has evolved significantly over the centuries, with various methods being employed to determine one’s position on Earth. Among these methods, the technique known as longitude by equal altitude plays a crucial role in celestial navigation. This technique allows navigators to ascertain their longitude based on the observation of celestial bodies at equal altitudes, which can be particularly useful when other means of determining one's position are not available or practical.To understand longitude by equal altitude, it is essential to first grasp the basics of longitude itself. Longitude refers to the geographic coordinate that specifies the east-west position of a point on the Earth's surface. It is measured in degrees, with the Prime Meridian serving as the reference line at 0 degrees longitude. Knowing your longitude is critical for accurate navigation, especially at sea, where landmarks are often absent.The method of longitude by equal altitude involves using a sextant to measure the angle of a celestial body, such as the sun or a star, above the horizon. By taking simultaneous readings of the celestial body at equal altitudes from two different locations, navigators can create a line of position that helps them determine their longitude. This technique is particularly advantageous because it does not require precise timekeeping, which was historically a significant challenge for sailors.In practical terms, a navigator might observe the sun at noon when it reaches its highest point in the sky. If they take this measurement from two different positions and find that the angle of the sun is the same at both locations, they can infer their longitude. This method relies on the principle that the sun's position in the sky is consistent across the globe at any given time, making it a reliable reference for navigation.One of the most fascinating aspects of longitude by equal altitude is its historical significance. Before the invention of accurate marine chronometers in the 18th century, sailors struggled with determining their longitude while at sea. Many navigators relied on dead reckoning, which could lead to significant errors over long distances. The introduction of celestial navigation techniques, including longitude by equal altitude, revolutionized maritime travel, allowing explorers to navigate the world's oceans with greater confidence.Today, while modern technology such as GPS has largely replaced traditional navigation methods, understanding longitude by equal altitude remains valuable. It serves as an educational tool for aspiring navigators and provides insight into the ingenuity of past navigational practices. Moreover, the principles behind this technique are still applicable in various fields, including astronomy and geography.In conclusion, the phrase longitude by equal altitude encapsulates a vital navigational technique that has stood the test of time. By allowing navigators to determine their position based on celestial observations, it highlights the interplay between human ingenuity and the natural world. As we continue to explore and traverse our planet, the legacy of methods like longitude by equal altitude reminds us of the importance of understanding our place in the universe, guiding us through both the seas and the skies.

导航的概念在几个世纪中发生了显著变化，采用了各种方法来确定一个人在地球上的位置。在这些方法中，被称为等高度经度的技术在天文导航中发挥着至关重要的作用。这种技术允许导航员根据观察到的天体在相等高度下来确定他们的经度，这在其他确定自己位置的方法不可用或不实用时尤其有用。要理解等高度经度，首先必须掌握经度的基本知识。经度是指指定地球表面某一点东西方位置的地理坐标。它以度数为单位测量，以本初子午线作为0度经度的参考线。知道自己的经度对于准确导航至关重要，尤其是在海上，因为地标往往缺失。等高度经度的方法涉及使用六分仪测量天体（如太阳或星星）在地平线上的角度。通过从两个不同的位置同时读取天体在相等高度时的角度，导航员可以创建一个位置线，帮助他们确定经度。这种技术特别有利，因为它不需要精确的计时，这在历史上对水手来说是一个重大挑战。在实际操作中，导航员可能会在正午观察太阳，当太阳达到天空中的最高点时。如果他们从两个不同的位置进行此测量，并发现太阳的角度在两个位置都是相同的，他们可以推断出自己的经度。这种方法依赖于太阳在任何给定时间在天空中的位置在全球范围内是一致的原则，使其成为导航的可靠参考。等高度经度最迷人的方面之一是其历史意义。在18世纪之前，准确的海洋计时器尚未发明，水手们在海上确定经度时面临困难。许多导航员依赖死推法，这可能导致长距离航行时出现重大错误。天文导航技术的引入，包括等高度经度，彻底改变了海洋旅行，使探险家能够更自信地航行于世界的海洋。今天，尽管现代技术如GPS在很大程度上取代了传统的导航方法，但理解等高度经度仍然具有价值。它作为一个教育工具，帮助有志于导航的人，并提供对过去导航实践的聪明才智的洞察。此外，这种技术背后的原则在天文学和地理学等各个领域仍然适用。总之，短语等高度经度概括了一种经受住时间考验的重要导航技术。通过允许导航员基于天文观察来确定其位置，它突显了人类聪明才智与自然世界之间的相互作用。当我们继续探索和穿越我们的星球时，像等高度经度这样的方式的遗产提醒我们理解我们在宇宙中的位置的重要性，引导我们穿越海洋和天空。