parallactic base

简明释义

视差基线

英英释义

例句

1.In astrophysics, understanding the parallactic base is crucial for measuring distances to nearby stars.

在天体物理学中，理解视差基准对于测量附近恒星的距离至关重要。

2.The observatory's new setup improved the accuracy of the parallactic base measurements.

天文台的新设置提高了视差基准测量的准确性。

3.The astronomer adjusted the telescope to ensure that the stars were aligned with the parallactic base.

天文学家调整望远镜，以确保星星与视差基准对齐。

4.Using a parallactic base, the researchers were able to calculate the star's position more accurately.

通过使用视差基准，研究人员能够更准确地计算星星的位置。

5.The concept of parallactic base is essential for understanding how we perceive celestial objects.

理解视差基准的概念对于理解我们如何感知天体至关重要。

作文

In the field of astronomy, understanding the concept of a parallactic base is essential for measuring distances to celestial objects. The term refers to the baseline distance between two observation points, typically on Earth, from which astronomers can observe and measure the apparent movement of stars or other celestial bodies against a more distant background. This technique is crucial because it allows scientists to calculate the distance to these objects using trigonometric principles. The larger the parallactic base, the more accurate the measurements tend to be, as it reduces the effects of atmospheric distortion and increases the angular separation observed. The significance of the parallactic base becomes even clearer when we consider the method of parallax itself. Parallax is the apparent shift in position of an object when viewed from different angles. For example, if you hold your finger in front of your face and close one eye, then the other, your finger appears to move against the background. This effect is what astronomers exploit to determine how far away stars are from Earth. By measuring the angle of this shift and knowing the distance of the parallactic base, they can apply simple trigonometry to find the distance to the star. Historically, the use of a parallactic base has evolved significantly. Early astronomers relied on the naked eye and simple tools to measure angles and distances. However, with advancements in technology, modern telescopes equipped with sophisticated instruments have allowed for much more precise measurements. These developments underscore the importance of having a well-defined parallactic base. For instance, the European Space Agency's Gaia mission utilizes a large parallactic base created by the satellite's orbit around the Sun, which enables it to create a three-dimensional map of our galaxy with unprecedented accuracy. Moreover, the concept of a parallactic base is not limited to just astronomy; it also finds applications in various fields such as surveying, navigation, and even virtual reality. In surveying, for instance, establishing a reliable parallactic base is crucial for accurately determining land boundaries and elevations. Similarly, in navigation, understanding the relative positions of landmarks can help in plotting a course. In conclusion, the parallactic base is a fundamental aspect of astronomical measurements that highlights the intersection of geometry and observational science. It serves as a vital tool for astronomers seeking to unravel the mysteries of the universe, allowing them to measure vast distances that would otherwise remain elusive. As technology continues to advance, the precision and effectiveness of using a parallactic base will undoubtedly improve, leading to new discoveries about the cosmos and our place within it.

在天文学领域，理解“视差基线”这一概念对于测量天体距离至关重要。这个术语指的是两个观察点之间的基线距离，通常是在地球上，天文学家可以通过这些点观察和测量星星或其他天体相对于更远背景的明显运动。这种技术至关重要，因为它使科学家能够利用三角学原理计算这些物体的距离。“视差基线”越大，测量的准确性往往越高，因为它减少了大气失真效应，并增加了观察到的角度分离。“视差基线”的重要性在我们考虑视差法时变得更加明显。视差是指从不同角度观察物体时，物体位置的明显变化。例如，如果你把手指放在脸前，然后闭上一只眼睛，再闭另一只眼睛，你的手指似乎会在背景中移动。天文学家利用这种效应来确定恒星距离地球的远近。通过测量这种位移的角度并知道“视差基线”的距离，他们可以应用简单的三角学来找到恒星的距离。历史上，“视差基线”的使用经历了显著的发展。早期的天文学家依靠肉眼和简单工具来测量角度和距离。然而，随着技术的进步，现代望远镜配备了复杂的仪器，使得测量更加精确。这些发展强调了拥有清晰定义的“视差基线”的重要性。例如，欧洲航天局的盖亚任务利用卫星围绕太阳轨道创造了一个大的“视差基线”，使其能够以前所未有的精度绘制我们银河系的三维地图。此外，“视差基线”的概念不仅限于天文学；它在测量、导航甚至虚拟现实等多个领域也找到了应用。在测量中，建立可靠的“视差基线”对于准确确定土地边界和海拔高度至关重要。同样，在导航中，理解地标的相对位置可以帮助绘制航线。总之，“视差基线”是天文测量的基本方面，突显了几何学与观测科学的交汇。它作为天文学家揭示宇宙奥秘的重要工具，使他们能够测量那些否则将保持神秘的广阔距离。随着技术的不断进步，使用“视差基线”的精确性和有效性无疑会提高，从而导致对宇宙及我们在其中的位置的新发现。