minute of arc

简明释义

弧分

英英释义

例句

1.In navigation, a ship's course can be adjusted by as little as 5 minutes of arc to ensure it stays on track.

在航海中，船只的航向可以调整至多5角分，以确保它保持在正轨上。

2.The telescope has a resolution of 1 minute of arc, allowing astronomers to distinguish between closely spaced stars.

这台望远镜的分辨率为1角分，使天文学家能够区分紧密相邻的星星。

3.Surveyors use instruments that can measure angles with an accuracy of up to 1 minute of arc.

测量员使用的仪器可以精确测量到1角分的角度。

4.A typical human eye can resolve objects that are about 60 minutes of arc apart.

普通人眼睛能够分辨的物体大约相隔60角分。

5.The angular separation between the two planets is measured in minutes of arc for precise observations.

两颗行星之间的角度分离用角分来测量，以便进行精确观察。

作文

Understanding the concept of a minute of arc is essential for various fields, including astronomy, navigation, and even photography. A minute of arc is a unit of angular measurement that is equal to one sixtieth of a degree. This means that there are 60 minutes of arc in a single degree. The term 'minute' here can be somewhat misleading, as it does not refer to time but rather to an angle. This small unit allows for precise measurements when dealing with angles, which is crucial in many scientific and practical applications.In astronomy, for instance, the minute of arc plays a vital role in measuring the positions of stars and planets. The vast distances between celestial bodies require astronomers to use very small angles to describe their positions in the sky accurately. For example, the apparent size of the Moon is about 30 minutes of arc across, which is how we perceive it from Earth. Such measurements help astronomers calculate distances and trajectories, allowing for better understanding and exploration of our universe.Similarly, in navigation, the minute of arc is fundamental for determining latitude and longitude. Each degree of latitude is approximately 69 miles apart, so a minute of arc represents about 1.15 miles. Navigators rely on this precision to chart courses and ensure safe travel across oceans and land. In modern GPS systems, the accuracy of location is often expressed in minutes of arc, showcasing its importance in contemporary technology.Photography also benefits from the understanding of minutes of arc. When taking photographs, especially in astrophotography, knowing the angular resolution is crucial. The ability to distinguish between two points of light, such as stars, depends on the resolving power of the camera and lens used. This is often measured in minutes of arc, where a smaller value indicates a higher resolution. Photographers must understand these measurements to capture stunning images of the night sky or distant landscapes.Furthermore, the concept of a minute of arc is not limited to science and technology; it can also be applied in everyday life. For example, when setting up a telescope, enthusiasts must align their instruments using angular measurements. Understanding how to measure and adjust angles in minutes of arc ensures that they can focus on the desired celestial object effectively.In conclusion, the minute of arc is a critical unit of measurement that transcends various disciplines. Its application in astronomy, navigation, photography, and even casual hobbies highlights its importance. As we continue to explore and understand our world, mastering the concept of a minute of arc will empower us to make precise calculations and observations. Whether you are an aspiring astronomer, a seasoned navigator, or a passionate photographer, grasping this concept will enhance your skills and deepen your appreciation for the intricacies of our universe.

理解角分这一概念对于天文学、导航甚至摄影等多个领域至关重要。角分是一个角度测量单位，等于一度的六十分之一。这意味着在一个完整的度数中有60个角分。这里的“分钟”可能会让人感到误解，因为它并不是指时间，而是指一个角度。这个小单位允许在处理角度时进行精确测量，这在许多科学和实际应用中至关重要。例如，在天文学中，角分在测量星星和行星的位置时发挥着重要作用。天体之间的巨大距离要求天文学家使用非常小的角度来准确描述它们在天空中的位置。例如，月球的视角大小约为30个角分，这就是我们从地球上看到它的方式。这种测量帮助天文学家计算距离和轨道，从而更好地理解和探索我们的宇宙。同样，在导航中，角分是确定纬度和经度的基础。每度纬度大约相隔69英里，因此一个角分代表大约1.15英里。导航员依赖这种精确性来绘制航线，确保在海洋和陆地上的安全旅行。在现代GPS系统中，位置的准确性通常用角分表示，这展示了它在当代技术中的重要性。摄影也受益于对角分的理解。在拍摄照片时，尤其是在天文摄影中，了解角分辨率至关重要。区分两个光点（如星星）的能力取决于相机和镜头的分辨率。这通常以角分来衡量，其中较小的值表示较高的分辨率。摄影师必须理解这些测量，以捕捉夜空或遥远景观的惊人图像。此外，角分的概念并不仅限于科学和技术，它还可以应用于日常生活。例如，在设置望远镜时，爱好者必须使用角度测量来调整他们的仪器。理解如何测量和调整角度，以角分为单位，确保他们能够有效地对焦于所需的天体。总之，角分是一个关键的测量单位，超越了各种学科。它在天文学、导航、摄影甚至休闲爱好中的应用突显了其重要性。随着我们继续探索和理解我们的世界，掌握角分的概念将使我们能够进行精确的计算和观察。无论你是一个有抱负的天文学家、经验丰富的导航员，还是一个充满激情的摄影师，掌握这一概念将提升你的技能，并加深你对我们宇宙复杂性的欣赏。