zenith distance

简明释义

顶距

英英释义

例句

1.The zenith distance helps in calculating the altitude of celestial objects above the horizon.

天顶距离有助于计算天体在地平线以上的高度。

2.To navigate effectively, sailors must understand the concept of zenith distance when using celestial navigation.

为了有效导航，水手必须理解在使用天文导航时天顶距离的概念。

3.In astronomy, the zenith distance is measured from the observer's zenith to the object being observed.

在天文学中，天顶距离是从观察者的天顶到被观察物体测量的。

4.The astronomer calculated the zenith distance to determine the position of the stars in the night sky.

天文学家计算了天顶距离以确定夜空中星星的位置。

5.During the solar eclipse, the zenith distance of the sun was crucial for accurate observations.

在日食期间，太阳的天顶距离对于准确观察至关重要。

作文

In the field of astronomy, understanding various concepts is crucial for interpreting celestial phenomena. One such concept is zenith distance, which refers to the angle between an observer's zenith (the point in the sky directly above them) and a celestial object. This measurement is essential for astronomers and navigators alike, as it helps determine the position of stars and planets in relation to the Earth. The zenith distance is measured in degrees, with the zenith itself being at 0 degrees and the horizon at 90 degrees. When observing a star, its zenith distance can tell us how high it is in the sky. For example, if a star has a zenith distance of 30 degrees, it means that the star is positioned at an angle of 30 degrees from the zenith point, making it relatively high in the sky. This concept is not just limited to theoretical applications; it has practical implications as well. Sailors and pilots use the zenith distance to navigate effectively. By knowing the zenith distance of celestial bodies, they can determine their latitude and longitude. This is particularly important when traveling in areas where landmarks are scarce. With the advent of modern technology, tools like sextants have made measuring zenith distance easier. However, understanding the fundamental principles behind this measurement remains vital for accurate navigation.In addition to navigation, the zenith distance plays a significant role in understanding the Earth's atmosphere. As the sun moves across the sky, its zenith distance changes throughout the day. At solar noon, when the sun is at its highest point, its zenith distance is at its minimum. Conversely, during sunrise and sunset, the zenith distance reaches its maximum. This variation affects solar energy received on Earth, influencing climate and weather patterns. For instance, regions closer to the equator experience a smaller zenith distance for the sun, leading to more direct sunlight and warmer temperatures compared to polar regions where the sun's rays strike at a larger zenith distance.Moreover, the zenith distance has implications in fields such as photography and architecture. Photographers often consider the sun's position, which is determined by its zenith distance, to capture the best lighting conditions. Similarly, architects may design buildings to optimize natural light based on the zenith distance of the sun at different times of the year. Understanding how light interacts with structures can lead to energy-efficient designs that utilize daylight effectively.In conclusion, the concept of zenith distance extends far beyond mere astronomical observations. It is a vital measurement that impacts navigation, climate understanding, and even art and architecture. By grasping the significance of zenith distance, we can appreciate the interconnectedness of various fields and the importance of celestial observations in our daily lives. Whether one is a seasoned astronomer or a curious learner, the zenith distance offers a fascinating glimpse into the relationship between Earth and the cosmos.

在天文学领域，理解各种概念对于解释天体现象至关重要。其中一个概念是天顶距离，它指的是观察者的天顶（直接在他们头顶的天空点）与天体之间的角度。这一测量对于天文学家和航海者来说都是必不可少的，因为它有助于确定恒星和行星相对于地球的位置。天顶距离以度为单位进行测量，天顶本身为0度，地平线为90度。当观察一颗星星时，它的天顶距离可以告诉我们它在天空中的高度。例如，如果一颗星星的天顶距离为30度，这意味着这颗星星与天顶点的角度为30度，使其在天空中相对较高。这个概念不仅限于理论应用；它也具有实际意义。水手和飞行员使用天顶距离进行有效导航。通过了解天体的天顶距离，他们可以确定自己的纬度和经度。这在旅行到缺乏地标的地区时尤其重要。随着现代技术的发展，像六分仪这样的工具使得测量天顶距离变得更加容易。然而，理解这种测量背后的基本原理仍然对准确导航至关重要。除了导航，天顶距离在理解地球大气层方面也起着重要作用。当太阳在天空中移动时，它的天顶距离在一天中会发生变化。在太阳正午，当太阳处于最高点时，它的天顶距离达到最小值。相反，在日出和日落时，天顶距离达到最大值。这种变化影响了地球接收到的太阳能，进而影响气候和天气模式。例如，靠近赤道的地区，太阳的天顶距离较小，导致阳光更直接、温度更高，而极地地区的太阳光线则以较大的天顶距离照射。此外，天顶距离在摄影和建筑等领域也具有重要意义。摄影师通常会考虑太阳的位置，而这一位置由其天顶距离决定，以捕捉最佳的光照条件。同样，建筑师可能会设计建筑物，以根据一年中不同时间的太阳的天顶距离来优化自然光。理解光线如何与结构相互作用可以导致节能设计，有效利用日光。总之，天顶距离的概念远不止天文观察。它是一项重要的测量，影响着导航、气候理解，甚至艺术和建筑。通过掌握天顶距离的重要性，我们可以欣赏到各个领域之间的相互关联，以及天体观察在我们日常生活中的重要性。无论是资深天文学家还是好奇的学习者，天顶距离都提供了一个迷人的视角，让我们看到地球与宇宙之间的关系。