true zenith distance

简明释义

真天顶距

英英释义

例句

1.To improve satellite communication, engineers must account for the true zenith distance when positioning satellites.

为了改善卫星通信，工程师在定位卫星时必须考虑真天顶距离。

2.During the observation, we measured the true zenith distance of the moon using a sextant.

在观测过程中，我们使用六分仪测量了月亮的真天顶距离。

3.The pilot adjusted the flight path based on the true zenith distance of the destination airport.

飞行员根据目的地机场的真天顶距离调整了飞行路线。

4.The astronomer calculated the true zenith distance to determine the star's position in the sky.

天文学家计算了真天顶距离以确定星星在天空中的位置。

5.Understanding the true zenith distance is crucial for accurate navigation at sea.

理解真天顶距离对于准确的海上导航至关重要。

作文

In the realm of astronomy and navigation, precise measurements are crucial for understanding celestial bodies and their positions in relation to Earth. One such measurement is the true zenith distance, which refers to the angle between a celestial body and the zenith point directly above an observer. This concept is vital for navigators and astronomers alike, as it allows them to accurately determine the position of stars and planets in the night sky. Understanding the true zenith distance can significantly enhance our ability to chart courses across vast oceans or to conduct scientific observations of celestial phenomena.The true zenith distance is measured from the observer's zenith, which is the point in the sky that is directly overhead. To visualize this, imagine standing at a particular location on Earth and looking straight up; that point is your zenith. The true zenith distance is then calculated by measuring the angle downwards to a star or planet. This measurement is essential because it provides a direct correlation between the observer's position and the celestial body being observed.For navigators, understanding the true zenith distance is critical for determining latitude and longitude. By knowing the position of a celestial body and its true zenith distance, navigators can apply various mathematical formulas to pinpoint their location on the globe. Historically, sailors relied heavily on these measurements to navigate the seas before the advent of modern technology. They would use sextants to measure the angle of a star above the horizon and then calculate their position based on the true zenith distance of that star.In addition to navigation, the true zenith distance is also significant in the field of astronomy. Astronomers use this measurement to track the movement of celestial objects and to study their characteristics. For example, when observing a distant star, astronomers will take into account its true zenith distance to understand its position relative to Earth. This information can help scientists determine the star's distance from our planet and its trajectory through space.Moreover, the true zenith distance plays a role in understanding the Earth's atmosphere. When light from a celestial body passes through the atmosphere, it can be refracted, altering its apparent position in the sky. By accounting for the true zenith distance, astronomers can make necessary adjustments to their observations, ensuring that they are as accurate as possible. This is particularly important when studying phenomena such as eclipses or transits, where precise timing and positioning are essential.In conclusion, the true zenith distance is a fundamental concept in both navigation and astronomy. It serves as a bridge between our observations of the night sky and our understanding of our position on Earth. As we continue to explore the universe, the importance of this measurement will only grow, reminding us of the intricate relationship between celestial bodies and our planet. Whether we are plotting a course across the ocean or gazing at the stars, the true zenith distance remains a key element in our quest for knowledge and exploration of the cosmos.

在天文学和导航领域，精确的测量对于理解天体及其与地球的相对位置至关重要。一个这样的测量是true zenith distance，它指的是天体与观察者正上方的天顶点之间的角度。这个概念对于导航员和天文学家来说都非常重要，因为它使他们能够准确确定星星和行星在夜空中的位置。理解true zenith distance可以显著增强我们在广阔海洋中航行或进行天文现象科学观察的能力。true zenith distance是从观察者的天顶测量的，即直接在头顶上的天空中的点。为了可视化这一点，想象一下站在地球上的某个特定位置，直视天空；那个点就是你的天顶。然后，通过向下测量到星星或行星的角度来计算true zenith distance。这个测量至关重要，因为它提供了观察者的位置与被观察天体之间的直接关联。对于导航员来说，理解true zenith distance对于确定纬度和经度至关重要。通过了解天体的位置及其true zenith distance，导航员可以应用各种数学公式来准确定位他们在地球上的位置。历史上，水手们在现代技术出现之前，严重依赖这些测量来航行。他们会使用六分仪测量星星在地平线上的角度，然后根据该星星的true zenith distance计算他们的位置。除了导航，true zenith distance在天文学领域也具有重要意义。天文学家使用这一测量值来跟踪天体的运动并研究其特征。例如，在观察遥远的星星时，天文学家会考虑其true zenith distance以了解其相对于地球的位置。这些信息可以帮助科学家确定该星星离我们星球的距离及其在太空中的轨迹。此外，true zenith distance在理解地球的大气层方面也发挥着作用。当来自天体的光线穿过大气层时，它可能会发生折射，从而改变其在天空中的表观位置。通过考虑true zenith distance，天文学家可以对他们的观察进行必要的调整，确保尽可能准确。这在研究日食或凌日等现象时尤其重要，因为精确的时间和位置至关重要。总之，true zenith distance是导航和天文学中的一个基本概念。它在我们对夜空的观察与我们对地球位置的理解之间架起了一座桥梁。随着我们继续探索宇宙，这一测量的重要性只会增加，提醒我们天体与我们星球之间错综复杂的关系。无论我们是在海洋中绘制航线，还是在仰望星空，true zenith distance始终是我们追求知识与探索宇宙的关键要素。