mean ecliptic sun

简明释义

黄道平太阳

英英释义

例句

1.Astronomers calculate the coordinates of the mean ecliptic sun 平均黄道太阳 to predict solar eclipses accurately.

天文学家计算平均黄道太阳 mean ecliptic sun 的坐标，以准确预测日食。

2.Astrophysicists often refer to the mean ecliptic sun 平均黄道太阳 when modeling planetary movements.

天体物理学家在建模行星运动时，常常提到平均黄道太阳 mean ecliptic sun。

3.In celestial navigation, knowing the location of the mean ecliptic sun 平均黄道太阳 helps sailors determine their position at sea.

在天文导航中，了解平均黄道太阳 mean ecliptic sun 的位置可以帮助水手确定他们在海上的位置。

4.The position of the mean ecliptic sun 平均黄道太阳 is crucial for determining the astrological sign of an individual.

确定一个人的星座时，平均黄道太阳 mean ecliptic sun 的位置至关重要。

5.The mean ecliptic sun 平均黄道太阳 plays a significant role in the calculation of time zones.

平均黄道太阳 mean ecliptic sun 在时区计算中起着重要作用。

作文

The concept of the mean ecliptic sun is fundamental in understanding celestial mechanics and the way we perceive time and seasons on Earth. The term refers to an imaginary point that represents the average position of the sun along the ecliptic plane, which is the apparent path the sun traces through the sky over a year. This average position is crucial for astronomers and navigators as it provides a reliable reference point for measuring time and determining the positions of celestial bodies.To grasp the significance of the mean ecliptic sun, one must first understand the concept of the ecliptic itself. The ecliptic is the plane of Earth's orbit around the sun, and it is tilted at an angle of approximately 23.5 degrees relative to the celestial equator. As the Earth revolves around the sun, the sun appears to move along this plane, creating the illusion of changing positions throughout the year. However, the actual motion of the sun is not uniform due to the elliptical shape of Earth's orbit, leading to variations in its speed and position.This is where the mean ecliptic sun comes into play. By averaging out these variations, astronomers can create a model that simplifies calculations and predictions regarding the sun's position. The mean ecliptic sun serves as a benchmark, allowing for more accurate timekeeping and navigation. In practical terms, it helps us define the length of a solar day, which is essential for our daily activities and the functioning of society.Moreover, the mean ecliptic sun plays a critical role in the development of calendars. Ancient civilizations relied on the sun's position to determine agricultural cycles, religious festivals, and seasonal changes. By utilizing the concept of the mean ecliptic sun, they were able to create more consistent and reliable calendars, which in turn influenced their cultural practices and societal structures.In modern times, the mean ecliptic sun continues to be relevant in various fields, including astronomy, navigation, and even space exploration. For instance, spacecraft traveling to other planets must account for the position of the mean ecliptic sun to calculate their trajectories accurately. Understanding the sun's average position allows scientists to predict solar phenomena, such as solar eclipses and sunspots, which can have significant implications for both Earth and space missions.In conclusion, the mean ecliptic sun is more than just a technical term; it represents a vital aspect of our understanding of the universe. By providing a consistent reference point, it aids in timekeeping, navigation, and the development of calendars. Its influence extends from ancient agricultural practices to modern scientific endeavors, demonstrating the interconnectedness of our lives with the cosmos. As we continue to explore and understand the universe, the concept of the mean ecliptic sun will undoubtedly remain a cornerstone of our astronomical knowledge.

‘平均黄道太阳’的概念在理解天体力学以及我们如何感知地球上的时间和季节方面至关重要。这个术语指的是一个虚构的点，代表太阳沿黄道平面的位置的平均值，黄道是太阳在一年中穿过天空的表观路径。这个平均位置对于天文学家和导航员来说至关重要，因为它提供了一个可靠的参考点，用于测量时间和确定天体的位置。为了理解‘平均黄道太阳’的重要性，首先必须了解黄道本身的概念。黄道是地球围绕太阳轨道的平面，它相对于天球赤道倾斜大约23.5度。当地球围绕太阳旋转时，太阳似乎沿着这个平面移动，造成了其在一年中位置变化的错觉。然而，由于地球轨道的椭圆形状，太阳的实际运动并不均匀，导致其速度和位置的变化。这就是‘平均黄道太阳’发挥作用的地方。通过对这些变化进行平均化，天文学家可以创建一个简化计算和预测太阳位置的模型。‘平均黄道太阳’作为基准，允许更准确的计时和导航。在实际应用中，它帮助我们定义太阳日的长度，这对我们的日常活动和社会运作至关重要。此外，‘平均黄道太阳’在日历的发展中也发挥了关键作用。古代文明依靠太阳的位置来确定农业周期、宗教节日和季节变化。通过利用‘平均黄道太阳’的概念，他们能够创建更一致和可靠的日历，从而影响他们的文化实践和社会结构。在现代，‘平均黄道太阳’在包括天文学、导航乃至太空探索等多个领域仍然具有相关性。例如，前往其他行星的航天器必须考虑‘平均黄道太阳’的位置，以准确计算其轨迹。理解太阳的平均位置使科学家能够预测太阳现象，如日食和太阳黑子，这些现象对地球和太空任务都有重大影响。总之，‘平均黄道太阳’不仅仅是一个技术术语；它代表了我们理解宇宙的一个重要方面。通过提供一个一致的参考点，它有助于计时、导航和日历的发展。它的影响从古代农业实践延伸到现代科学事业，展示了我们的生活与宇宙的相互联系。随着我们继续探索和理解宇宙，‘平均黄道太阳’的概念无疑将继续成为我们天文学知识的基石。