lower branch of the observer's meridian

简明释义

测者子圈

英英释义

例句

1.When calculating the altitude of celestial bodies, one must reference the lower branch of the observer's meridian (观察者子午线的下支).

在计算天体的高度时，必须参考观察者子午线的下支。

2.During the observation session, we aligned our telescope with the lower branch of the observer's meridian (观察者子午线的下支).

在观察过程中，我们将望远镜与观察者子午线的下支对齐。

3.The measurement of angles in celestial navigation often involves the lower branch of the observer's meridian (观察者子午线的下支).

在天文导航中，角度的测量通常涉及到观察者子午线的下支。

4.In astronomy, the position of a star can be determined using the lower branch of the observer's meridian (观察者子午线的下支).

在天文学中，可以使用观察者子午线的下支来确定星星的位置。

5.The lower branch of the observer's meridian (观察者子午线的下支) is crucial for accurate navigation.

对于准确导航来说，观察者子午线的下支是至关重要的。

作文

In the field of astronomy and navigation, understanding the concepts related to celestial observations is crucial. One such concept is the lower branch of the observer's meridian, which refers to a specific line of longitude that aids in determining the position of celestial bodies in relation to an observer on the Earth's surface. This term may seem complex, but its implications are significant for navigators and astronomers alike. The lower branch of the observer's meridian essentially represents the vertical line that runs from the North to the South Pole, intersecting with the horizon at the observer's location. To comprehend this better, let us consider the significance of the observer's meridian. The observer's meridian is the great circle that passes through both the zenith (the point directly above the observer) and the nadir (the point directly below). It divides the sky into eastern and western halves and plays a pivotal role in celestial navigation. The lower branch of the observer's meridian specifically refers to the portion of this meridian that extends downward from the zenith to the horizon. When an observer looks at the sky, they can determine the altitude of celestial objects by measuring their angle above the horizon. The lower branch of the observer's meridian serves as a reference point for these measurements. For instance, when a star rises above the horizon, it crosses the lower branch of the observer's meridian at a specific time, marking its ascension into the observable sky. Similarly, when a star sets, it again intersects with this lower branch, indicating its departure from the observer's view. Understanding the lower branch of the observer's meridian is also essential for timekeeping and calendar calculations. The position of celestial bodies relative to this meridian can help determine local solar time. For example, when the sun is at its highest point in the sky, it is aligned with the observer's meridian, providing a clear indication of noon. Furthermore, the lower branch of the observer's meridian has applications beyond simple celestial navigation. It is used in various scientific fields, including meteorology and geology, where understanding the Earth's orientation and position can lead to more accurate predictions and analyses. By studying the changes in the lower branch of the observer's meridian over time, scientists can gain insights into tectonic movements, climate patterns, and even the effects of human activity on the planet. In summary, the lower branch of the observer's meridian is a fundamental concept in astronomy and navigation, serving as a vital reference for observing celestial phenomena. Its importance extends beyond mere navigation; it is integral to our understanding of time, geography, and the natural world. By mastering this concept, individuals can enhance their skills in various scientific disciplines, contributing to a deeper appreciation of the universe and our place within it.

在天文学和导航领域，理解与天体观测相关的概念至关重要。其中一个概念是观察者子午线的下支，它指的是一个特定的经线，帮助确定天体相对于地球表面某个观察者的位置。这个术语可能看起来复杂，但其意义对导航员和天文学家来说都是显著的。观察者子午线的下支本质上代表了一条从北极到南极的垂直线，与观察者所在位置的地平线相交。为了更好地理解这一点，让我们考虑观察者子午线的重要性。观察者子午线是通过天顶（直接位于观察者上方的点）和天底（直接位于观察者下方的点）的伟大圆圈。它将天空分为东半球和西半球，并在天体导航中发挥着关键作用。观察者子午线的下支特别指的是从天顶向下延伸到地平线的这条子午线的部分。当观察者仰望天空时，他们可以通过测量天体在地平线上的角度来确定其高度。观察者子午线的下支作为这些测量的参考点。例如，当一颗星星在地平线上升起时，它会在特定时间穿过观察者子午线的下支，标志着它进入可观测的天空。同样，当一颗星星落下时，它再次与这条下支相交，表明它离开了观察者的视野。理解观察者子午线的下支对于计时和日历计算也至关重要。天体相对于这条子午线的位置可以帮助确定当地的太阳时间。例如，当太阳在天空中达到最高点时，它与观察者的子午线对齐，清楚地指示了正午。此外，观察者子午线的下支在气象学和地质学等多个科学领域也有应用，在这些领域中，理解地球的方向和位置可以导致更准确的预测和分析。通过研究观察者子午线的下支随时间的变化，科学家可以获得有关构造运动、气候模式甚至人类活动对地球影响的洞察。总之，观察者子午线的下支是天文学和导航中的一个基本概念，作为观察天体现象的重要参考。它的重要性超越了简单的导航；它是我们理解时间、地理和自然世界的基础。通过掌握这一概念，个人可以增强在各个科学学科中的技能，从而加深对宇宙及我们在其中位置的欣赏。