marine chronometer

简明释义

航海天文钟

英英释义

例句

1.Sailors often relied on their marine chronometer to avoid getting lost at sea.

水手们常常依赖他们的海洋计时器以避免在海上迷路。

2.An accurate marine chronometer is essential for navigating through open waters.

准确的海洋计时器对于在公海上航行至关重要。

3.Before setting sail, sailors calibrated their marine chronometer to ensure precise navigation.

在启航之前，水手们校准了他们的海洋计时器以确保精确导航。

4.The captain used the marine chronometer to determine the ship's longitude accurately.

船长使用海洋计时器准确确定船只的经度。

5.The invention of the marine chronometer revolutionized maritime travel in the 18th century.

海洋计时器的发明在18世纪彻底改变了海上旅行。

作文

The invention of the marine chronometer has been one of the most significant advancements in navigation history. Before its development, sailors faced immense challenges when trying to determine their longitude at sea. The inability to accurately measure time while at sea led to countless shipwrecks and navigational errors. The marine chronometer is a precise timekeeping device that allows sailors to calculate their position by comparing the local time with the time at a known longitude, usually set to Greenwich Mean Time (GMT). This revolutionary tool was invented by John Harrison in the 18th century and fundamentally changed the way maritime exploration was conducted.Prior to the advent of the marine chronometer, sailors relied on dead reckoning and celestial navigation, which were often unreliable due to various factors such as weather conditions and human error. The marine chronometer provided a solution to this problem by offering a reliable means to keep accurate time over long periods, even in the harshest conditions of the open sea. By knowing the exact time at a reference point, sailors could calculate their longitude by measuring the time difference between their local noon and the noon at the reference point. This innovation not only improved navigation but also enhanced the safety of sea travel.The accuracy of the marine chronometer was crucial for the success of long voyages. Harrison's early models were tested extensively, and his final design, known as H4, was able to maintain an accuracy of within one second per day. This level of precision was unprecedented at the time and allowed sailors to confidently traverse the world's oceans. The impact of the marine chronometer was profound; it opened up new trade routes and made global exploration feasible. Countries began to invest in maritime technology, leading to an age of discovery that expanded the horizons of the known world.In modern times, the principles behind the marine chronometer have evolved with advancements in technology. While traditional mechanical chronometers are still admired for their craftsmanship, GPS technology has largely replaced them for everyday navigation. However, the fundamental concept of accurately measuring time to determine position remains vital in navigation systems today. The legacy of the marine chronometer lives on in the tools we use, reminding us of the ingenuity and determination of those who came before us.In conclusion, the marine chronometer represents a pivotal moment in the history of navigation. It transformed maritime travel by providing a reliable means of determining longitude, thereby enhancing safety and efficiency at sea. The contributions of inventors like John Harrison paved the way for future advancements in navigation and exploration. As we continue to develop new technologies for navigation, it is essential to remember the importance of the marine chronometer and its role in shaping the course of maritime history.

海洋计时器的发明是航海史上最重要的进步之一。在其发展之前，水手在试图确定他们在海上的经度时面临着巨大的挑战。在海上无法准确测量时间导致了无数的船只失事和导航错误。海洋计时器是一种精确的计时装置，可以通过将当地时间与已知经度的时间进行比较来帮助水手计算他们的位置，通常设定为格林威治标准时间（GMT）。这个革命性的工具是约翰·哈里森在18世纪发明的，根本改变了海洋探险的方式。在海洋计时器出现之前，水手依赖于推算和天文导航，由于天气条件和人为错误等各种因素，这些方法往往不可靠。海洋计时器通过提供一种可靠的方式，在长时间内保持准确的时间，即使在开放海洋的恶劣条件下，也解决了这个问题。通过知道参考点的确切时间，水手可以通过测量他们当地中午与参考点中午之间的时间差来计算他们的经度。这项创新不仅改善了导航，还增强了海上旅行的安全性。海洋计时器的准确性对长途航行的成功至关重要。哈里森的早期模型经过了广泛的测试，他的最终设计H4能够保持每天误差在一秒之内。这种精确度在当时是前所未有的，使水手能够自信地穿越世界的海洋。海洋计时器的影响深远；它开辟了新的贸易路线，使全球探索成为可能。各国开始投资于海洋技术，导致了一个扩展已知世界视野的发现时代。在现代，海洋计时器背后的原理随着技术的进步而演变。虽然传统的机械计时器仍然因其工艺而受到赞赏，但GPS技术在日常导航中已大大取代了它们。然而，准确测量时间以确定位置的基本概念在今天的导航系统中仍然至关重要。海洋计时器的遗产在我们使用的工具中继续存在，提醒我们那些先辈的聪明才智和决心。总之，海洋计时器代表了航海历史上的一个关键时刻。它通过提供可靠的经度确定手段，转变了海洋旅行，从而提高了海上的安全性和效率。像约翰·哈里森这样的发明者的贡献为未来的导航和探索进步铺平了道路。随着我们继续开发新的导航技术，记住海洋计时器的重要性及其在塑造海洋历史中的作用是至关重要的。