declination chart

简明释义

磁倾图

英英释义

例句

1.The declination chart indicated that we needed to adjust our bearings by 5 degrees east.

该磁偏角图显示我们需要将航向调整5度向东。

2.Using a declination chart helps navigators adjust their compass readings accurately.

使用磁偏角图可以帮助导航员准确调整他们的指南针读数。

3.I always carry a declination chart in my backpack when I go camping.

每次去露营时，我总是随身携带一张磁偏角图。

4.Before heading out on my hiking trip, I made sure to check the declination chart for my area.

在出发去远足之前，我确保查看了我所在地区的磁偏角图。

5.In our navigation class, we learned how to interpret a declination chart effectively.

在我们的导航课程中，我们学习了如何有效解读磁偏角图。

作文

Understanding the concept of a declination chart is essential for anyone interested in navigation, astronomy, or even geology. A declination chart is a graphical representation that shows the variation of the Earth's magnetic field at different locations and times. This chart is particularly useful for navigators who rely on compasses to find their way. Compasses point towards magnetic north, which is not the same as true north due to the Earth's magnetic declination. Therefore, understanding how to use a declination chart can be crucial for accurate navigation.The Earth’s magnetic field is not uniform; it varies from place to place and changes over time. The difference between magnetic north and true north is what we refer to as magnetic declination. A declination chart provides the necessary information to compensate for this difference. For example, if you are navigating in an area where the magnetic declination is 10 degrees east, you need to adjust your compass reading by subtracting 10 degrees to find true north.In addition to navigation, a declination chart is also used in astronomy. Astronomers often need to know the position of celestial bodies relative to the Earth. The declination of a star or planet is similar to latitude on Earth, indicating how far north or south it is from the celestial equator. A declination chart helps astronomers locate these celestial bodies in the night sky. By understanding the declination of various stars, astronomers can accurately track their movements and predict their positions at different times of the year.Moreover, geologists and environmental scientists also utilize declination charts for various studies. The magnetic properties of rocks can reveal important information about the geological history of an area. By analyzing the magnetic declination recorded in rocks, scientists can infer the past positions of tectonic plates and understand the geological processes that have shaped the Earth over millions of years.Using a declination chart effectively requires some practice. First, one must determine their current location and the corresponding magnetic declination from the chart. Then, they can apply this information to their navigation or observational tasks. It is also important to note that magnetic declination can change over time due to shifts in the Earth’s magnetic field, so it is essential to use the most current declination chart available.In conclusion, a declination chart is a vital tool for various fields including navigation, astronomy, and geology. Understanding how to read and apply this chart can significantly enhance one’s ability to navigate effectively, observe celestial phenomena accurately, and study the Earth’s geological history. Whether you are a sailor, an astronomer, or a geologist, mastering the use of a declination chart will undoubtedly aid you in your endeavors and deepen your understanding of the world around you.

理解declination chart的概念对于任何对导航、天文学或地质学感兴趣的人来说都是至关重要的。declination chart是一个图形表示，显示了地球磁场在不同地点和时间的变化。这个图表对于依赖指南针寻找方向的导航员尤其有用。指南针指向磁北，而不是地理北，因为地球的磁偏角。因此，理解如何使用declination chart对于准确导航至关重要。地球的磁场并不均匀；它因地点而异，并随着时间变化。磁北和地理北之间的差异就是我们所称的磁偏角。declination chart提供了必要的信息来补偿这一差异。例如，如果你在一个磁偏角为10度东的地区导航，你需要通过减去10度来调整你的指南针读数，以找到地理北。除了导航，declination chart在天文学中也被使用。天文学家经常需要知道天体相对于地球的位置。星星或行星的偏角类似于地球上的纬度，表示它距离天球赤道的远近。declination chart帮助天文学家在夜空中定位这些天体。通过了解各种星星的偏角，天文学家可以准确追踪它们的运动，并预测它们在一年中的不同时间的位置。此外，地质学家和环境科学家也利用declination charts进行各种研究。岩石的磁性特征可以揭示该地区地质历史的重要信息。通过分析岩石记录的磁偏角，科学家可以推断构造板块的过去位置，并了解塑造地球数百万年的地质过程。有效使用declination chart需要一些练习。首先，必须确定当前位置及其对应的磁偏角，然后将这些信息应用于导航或观察任务。同样重要的是要注意，由于地球磁场的变化，磁偏角可能会随时间而改变，因此使用最新的declination chart是至关重要的。总之，declination chart是导航、天文学和地质学等多个领域的重要工具。理解如何阅读和应用这张图表可以显著提高一个人有效导航、准确观察天体现象和研究地球地质历史的能力。无论你是水手、天文学家还是地质学家，掌握declination chart的使用无疑会帮助你在工作中取得成功，并加深你对周围世界的理解。