astronomical refraction

简明释义

天文蒙气差

英英释义

例句

1.Astronomers must account for astronomical refraction 天文折射 when calculating the positions of celestial bodies.

天文学家在计算天体的位置时必须考虑天文折射。

2.During a sunset, the astronomical refraction 天文折射 can make the sun appear flattened.

在日落时，天文折射会使太阳看起来变扁。

3.The effects of astronomical refraction 天文折射 can vary depending on atmospheric conditions.

天文折射的影响可能会根据大气条件而有所不同。

4.The phenomenon of astronomical refraction 天文折射 allows us to see stars even when they are below the horizon.

天文折射的现象使我们即使在星星位于地平线以下时也能看到它们。

5.Understanding astronomical refraction 天文折射 is crucial for accurate astronomical observations.

理解天文折射对于准确的天文观测至关重要。

作文

Astronomy is a fascinating field that allows us to explore the universe and understand the celestial bodies that inhabit it. One of the intriguing phenomena that astronomers encounter is astronomical refraction, which refers to the bending of light as it passes through the Earth's atmosphere. This bending of light can significantly affect our observations of stars, planets, and other celestial objects. Understanding astronomical refraction is essential for precise astronomical measurements and enhances our comprehension of the universe.When we look at a star in the night sky, we are not seeing it as it truly is; instead, we are viewing it through the lens of our atmosphere. The Earth's atmosphere is composed of layers of air with varying temperatures and densities. As light from a distant star enters these layers, it travels at different speeds depending on the density of the air it is passing through. This difference in speed causes the light to bend, resulting in what we perceive as the position of the star being slightly altered from its actual location. This effect is known as astronomical refraction.The degree of astronomical refraction varies depending on several factors, including the altitude of the celestial object and the atmospheric conditions at the time of observation. For example, stars that are closer to the horizon experience more refraction than those that are directly overhead. This is because the light from low-horizon stars must pass through a greater thickness of the Earth's atmosphere, leading to more significant bending.Astronomers have developed models to predict the effects of astronomical refraction to correct their observations. By understanding how much light bends due to atmospheric conditions, they can determine the true position of celestial objects. This correction is crucial for various astronomical calculations, including navigation, satellite positioning, and the study of celestial mechanics.In addition to practical applications, astronomical refraction also has implications for our understanding of the universe. For instance, when observing distant galaxies or supernovae, astronomers must account for the refraction effects to accurately measure their distances and velocities. Without considering astronomical refraction, our understanding of the expansion of the universe and the behavior of cosmic phenomena could be significantly skewed.Moreover, astronomical refraction is not only limited to stars but also affects the observation of planets and other celestial bodies. During events such as planetary transits or eclipses, the apparent positions of these objects can be altered due to atmospheric refraction. This makes it imperative for astronomers to take these factors into account when conducting their research and making discoveries.In conclusion, astronomical refraction is a vital concept in astronomy that highlights the interplay between light and the Earth's atmosphere. It illustrates how our observations of the universe can be affected by the very air we breathe. By understanding and correcting for astronomical refraction, astronomers can enhance the accuracy of their measurements and deepen our knowledge of the cosmos. As we continue to explore the universe, the significance of astronomical refraction will remain a key factor in unraveling the mysteries of space and time.

天文学是一个迷人的领域，它使我们能够探索宇宙并理解其中的天体。天文学家遇到的一个有趣现象是天文折射，它指的是光线在穿过地球大气层时的弯曲。这种光的弯曲会显著影响我们对星星、行星和其他天体的观察。理解天文折射对于精确的天文测量至关重要，并增强了我们对宇宙的理解。当我们在夜空中看到一颗星星时，我们并不是在看到它的真实样子；相反，我们是通过大气的透镜来看它的。地球的大气层由不同温度和密度的空气层组成。当来自遥远星星的光进入这些层时，它在通过不同密度的空气时以不同的速度传播。这种速度的差异导致光发生弯曲，从而使我们感知到的星星位置与其实际位置略有偏差。这种效应被称为天文折射。天文折射的程度取决于多个因素，包括天体的高度和观察时的气象条件。例如，靠近地平线的星星经历的折射比正上方的星星更多。这是因为低水平星星的光必须经过更厚的地球大气层，导致更多的弯曲。天文学家已经开发出模型来预测天文折射的影响，以修正他们的观察结果。通过理解光因大气条件而弯曲的程度，他们可以确定天体的真实位置。这种修正对于各种天文计算至关重要，包括导航、卫星定位和天体力学研究。除了实际应用外，天文折射还对我们理解宇宙产生影响。例如，在观察遥远的星系或超新星时，天文学家必须考虑折射效应，以准确测量它们的距离和速度。如果不考虑天文折射，我们对宇宙膨胀和宇宙现象行为的理解可能会显著扭曲。此外，天文折射不仅限于星星，还影响对行星和其他天体的观察。在行星凌日或日食等事件期间，由于大气折射，这些物体的表观位置可能会发生变化。因此，天文学家在进行研究和发现时必须考虑这些因素。总之，天文折射是天文学中的一个重要概念，它突显了光与地球大气之间的相互作用。它展示了我们对宇宙的观察如何受到我们呼吸的空气的影响。通过理解和修正天文折射，天文学家可以提高测量的准确性，并加深我们对宇宙的知识。随着我们继续探索宇宙，天文折射的重要性将始终是揭开空间和时间奥秘的关键因素。