right ascension of mean sun

简明释义

平太阳赤经

英英释义

例句

1.During the equinox, the right ascension of mean sun changes rapidly.

在春分时，平均太阳的赤经变化迅速。

2.The right ascension of mean sun is essential for navigation at sea.

平均太阳的赤经对于海上的导航至关重要。

3.The astronomer calculated the right ascension of mean sun to determine the precise time of sunset.

天文学家计算了平均太阳的赤经以确定日落的准确时间。

4.By knowing the right ascension of mean sun, we can accurately align our telescopes for observation.

通过了解平均太阳的赤经，我们可以准确地调整望远镜进行观测。

5.Astronomers use the right ascension of mean sun to set their clocks accurately.

天文学家使用平均太阳的赤经来准确设置他们的时钟。

作文

The concept of right ascension of mean sun is fundamental in the field of astronomy and navigation. To understand this term, we first need to break it down into its components. Right ascension (RA) is akin to longitude on Earth, but instead of measuring distance from the Prime Meridian, it measures the angle along the celestial equator from a defined point known as the vernal equinox. The mean sun is an average position of the sun over the course of a year, accounting for variations due to the elliptical shape of Earth's orbit and axial tilt. Therefore, the right ascension of mean sun refers to the angular position of this average sun at any given time, expressed in hours, minutes, and seconds.In practical terms, the right ascension of mean sun is crucial for astronomers when they calculate the positions of celestial bodies. It allows them to predict where the sun will be in the sky at any given moment, which is essential for various applications, including satellite positioning and astrological observations. For instance, knowing the RA of the mean sun can help astronomers determine the best times for stargazing or conducting observations of other celestial phenomena.Moreover, the right ascension of mean sun plays a significant role in the creation of calendars. Ancient civilizations relied heavily on the movements of the sun and stars to mark time. By understanding the RA of the mean sun, they could create more accurate calendars that aligned with seasonal changes. This knowledge not only helped in agricultural planning but also played a vital role in religious and cultural practices.In modern times, the importance of the right ascension of mean sun has not diminished. With advancements in technology, astronomers can now track the mean sun's position with incredible precision. This accuracy is essential for GPS systems, which rely on satellites that are synchronized with the mean sun's position. Without the correct calculations involving the RA of the mean sun, GPS devices would struggle to provide accurate location data, impacting everything from navigation to emergency services.Furthermore, the right ascension of mean sun is also relevant in fields such as meteorology. Weather patterns can be influenced by the position of the sun, and understanding its RA can help scientists predict weather changes. By correlating the sun's position with atmospheric conditions, meteorologists can improve their forecasts, providing better information to the public.In conclusion, the right ascension of mean sun is a vital concept in astronomy that extends its influence across various fields, including navigation, calendar creation, and meteorology. Understanding this term allows for greater appreciation of how astronomical phenomena affect our daily lives. As we continue to explore the universe and refine our technologies, the significance of the right ascension of mean sun will undoubtedly remain a cornerstone of scientific inquiry and practical application.

“平均太阳的黄经”这一概念在天文学和导航领域中至关重要。要理解这个术语，我们首先需要将其分解成几个部分。黄经（RA）类似于地球上的经度，但它不是从本初子午线测量距离，而是从一个称为春分点的定义点沿着天球赤道测量角度。平均太阳是指一年内太阳的平均位置，考虑到地球轨道的椭圆形状和轴倾角的变化。因此，“平均太阳的黄经”指的是在任何给定时间，这个平均太阳的角位置，用小时、分钟和秒来表示。在实际应用中，“平均太阳的黄经”对天文学家计算天体的位置至关重要。它使他们能够预测太阳在天空中的位置，这对于包括卫星定位和天文观察在内的各种应用都是必不可少的。例如，知道平均太阳的黄经可以帮助天文学家确定最佳的观星时间或进行其他天文现象观察的时机。此外，“平均太阳的黄经”在日历的创建中也发挥了重要作用。古代文明在很大程度上依赖太阳和星星的运动来标记时间。通过了解平均太阳的黄经，他们可以创建更准确的日历，以便与季节变化保持一致。这一知识不仅有助于农业规划，还在宗教和文化实践中发挥了重要作用。在现代，平均太阳的黄经的重要性并没有减弱。随着技术的进步，天文学家现在可以以惊人的精确度跟踪平均太阳的位置。这种准确性对于GPS系统至关重要，因为这些系统依赖于与平均太阳位置同步的卫星。如果没有涉及平均太阳的黄经的正确计算，GPS设备将难以提供准确的位置数据，这将影响从导航到应急服务的方方面面。此外，“平均太阳的黄经”在气象学等领域也具有相关性。天气模式可能会受到太阳位置的影响，理解其黄经可以帮助科学家预测天气变化。通过将太阳的位置与大气条件相关联，气象学家可以改善他们的天气预报，为公众提供更好的信息。总之，“平均太阳的黄经”是天文学中的一个重要概念，它的影响延伸到导航、日历创建和气象学等多个领域。理解这个术语可以更好地欣赏天文现象如何影响我们的日常生活。随着我们继续探索宇宙并完善我们的技术，“平均太阳的黄经”的重要性无疑将继续成为科学研究和实际应用的基石。