angular width

简明释义

航向偏荡角幅

英英释义

例句

1.The telescope can measure the angular width of distant galaxies, which helps astronomers understand their size.

望远镜可以测量遥远星系的角宽度，这有助于天文学家了解它们的大小。

2.The angular width of the sun during an eclipse can be measured to study solar dynamics.

在日食期间，可以测量太阳的角宽度以研究太阳动力学。

3.The angular width of a star can indicate its distance from Earth based on its brightness.

一颗星星的角宽度可以根据其亮度指示其与地球的距离。

4.In photography, understanding the angular width of your lens can help you frame your subject better.

在摄影中，理解镜头的角宽度可以帮助你更好地构图你的主题。

5.When observing the moon, its angular width can appear larger than when viewed from Earth.

观察月球时，其角宽度看起来比从地球上看到的要大。

作文

In the study of astronomy, the concept of angular width plays a crucial role in understanding the apparent size of celestial objects as viewed from Earth. The term angular width refers to the angle that an object appears to occupy in the sky when observed from a specific point. This measurement is significant because it helps astronomers and enthusiasts alike to gauge how large or small an object appears relative to others in the night sky. For instance, when we look at the Moon, its angular width allows us to appreciate its size compared to nearby stars or planets. To grasp this concept, consider two different scenarios: viewing the Moon and viewing a distant galaxy. The Moon has a relatively large angular width, measuring about half a degree across, which makes it appear quite prominent in our sky. In contrast, a distant galaxy, even though it may contain billions of stars, has a much smaller angular width, often measured in arcseconds. This difference illustrates how distance affects our perception of size. Understanding angular width is not only essential for amateur astronomers but also for professionals who require precise measurements for their research. For example, when studying exoplanets, researchers often measure the angular width of the light curve during transits. This data helps them determine the size of the planet relative to its star. The larger the angular width of the planet's shadow, the larger the planet itself is likely to be. Moreover, angular width is also vital in the field of optics. When designing telescopes, engineers must account for the angular width of the objects they wish to observe to ensure that the telescope can gather enough light and resolve details clearly. If the angular width exceeds the telescope's capacity, the image may become blurred or indistinct, leading to inaccurate observations. In addition to astronomy and optics, the concept of angular width finds applications in various fields such as photography and virtual reality. Photographers often consider the angular width of their lenses to capture the desired scene effectively. Similarly, in virtual reality, developers must pay attention to the angular width of the user's field of view to create immersive experiences. In conclusion, the term angular width encapsulates a fundamental aspect of how we perceive the universe around us. Whether we are gazing at the Moon, studying distant galaxies, or working with optical devices, understanding angular width enhances our ability to interpret and appreciate the vastness of space. It serves as a bridge between our visual experiences and the mathematical frameworks that describe them, highlighting the intricate relationship between observation and measurement in our quest to understand the cosmos.

在天文学研究中，angular width（角宽度）的概念在理解从地球观察天体的表观大小方面起着至关重要的作用。术语angular width指的是一个物体在从特定点观察时，似乎占据天空的角度。这一测量是重要的，因为它帮助天文学家和爱好者们评估一个物体相对于夜空中其他物体的大小。例如，当我们观察月球时，其angular width使我们能够欣赏到它与附近恒星或行星的大小比较。为了更好地理解这一概念，可以考虑两个不同的场景：观察月球和观察遥远的星系。月球的angular width相对较大，约为半度，这使得它在我们的天空中显得非常显眼。相反，遥远的星系，即使它可能包含数十亿颗恒星，其angular width却要小得多，通常以弧秒来测量。这一差异说明了距离如何影响我们对大小的感知。理解angular width不仅对业余天文学家至关重要，对需要精确测量进行研究的专业人士也是如此。例如，在研究系外行星时，研究人员常常在过境期间测量光曲线的angular width。这些数据帮助他们确定行星相对于其恒星的大小。行星阴影的angular width越大，行星本身可能也越大。此外，angular width在光学领域也至关重要。在设计望远镜时，工程师必须考虑他们希望观察的物体的angular width，以确保望远镜能够收集足够的光并清晰地分辨细节。如果angular width超出了望远镜的能力，图像可能会变得模糊或不清晰，从而导致观察不准确。除了天文学和光学，angular width的概念在摄影和虚拟现实等多个领域也有应用。摄影师常常考虑他们镜头的angular width来有效捕捉所需的场景。同样，在虚拟现实中，开发人员必须关注用户视野的angular width，以创造身临其境的体验。总之，术语angular width概括了我们感知周围宇宙的基本方面。无论我们是在凝视月球、研究遥远的星系，还是使用光学设备，理解angular width都增强了我们解读和欣赏宇宙广袤的能力。它作为我们视觉体验与描述它们的数学框架之间的桥梁，突出了在我们探索理解宇宙的过程中观察与测量之间复杂的关系。