sidereal

简明释义

英[saɪˈdɪəriəl]美[saɪˈdɪriəl]

adj. 恒星的，星座的

英英释义

单词用法

同义词

反义词

例句

1.Sidereal age, the distance between they and earth, it is the conclusion that astronomy wants scrupulous to reach.

恒星的年龄，它们与地球之间的距离，都是天文学要一板一眼得出的结论。

2.Approximately, a year has 365 solar days but 366 sidereal days. Do you know why.

一年中大约有365个太阳日，但却有366个恒星日，你知道原因吗？

3.Unfortunately, here on planet Earth, with its decidedly undecimal sidereal year of 365-and-a-quarter days, that is just not going to happen.

但是不巧的是，在地球这个行星星球上，这种事不会发生，因为“恒星年（由365又1/4天所组成）是非十进制的”这一事实是确凿无差的。

4.Tropical year, and sidereal year are two different concepts.

回归年与恒星年是不同的两个概念。

5.The sidereal diurnal variation of cosmic ray ties up with the most basic and important problem in cosmic ray physics such as the origin, propagation and the acceleration mechanisms of cosmic ray.

宇宙线的恒星日变化紧密联系于宇宙线的起源、其传播途径的性质，以及宇宙线的加速机制等宇宙线物理中最基本的重大问题。

6.Tropical year , and sidereal year are two different concepts .

在即回归年与恒星年是不同的两个概念。

7.A sidereal day is about 4 minutes shorter than a solar day.

一个恒星日比一个太阳日大约短4分钟。

8.In astrology, the sidereal zodiac is based on the actual position of the constellations.

在占星术中，恒星黄道是基于星座的实际位置。

9.The astronomer used the sidereal time to accurately track the movements of the stars.

天文学家使用恒星时间来准确追踪星星的运动。

10.She set her telescope to observe sidereal phenomena in the night sky.

她调试望远镜观察夜空中的恒星现象。

11.The sidereal day is approximately 23 hours and 56 minutes long.

恒星日大约为23小时56分钟。

12.The satellite's orbit was calculated using sidereal measurements.

卫星的轨道是使用恒星测量计算的。

作文

In the vast expanse of the universe, the concept of time often takes on different meanings depending on the context in which it is observed. One fascinating aspect of this is the distinction between solar time and sidereal 恒星的 time. While solar time is based on the position of the sun in the sky, sidereal 恒星的 time is determined by the position of distant stars. This difference may seem subtle, yet it has profound implications for our understanding of astronomy and navigation.The term sidereal 恒星的 derives from the Latin word 'sidus,' meaning star. In practical terms, a sidereal 恒星的 day is approximately 23 hours, 56 minutes, and 4 seconds long. This is the time it takes for the Earth to rotate once on its axis relative to the background stars. In contrast, a solar day is about 24 hours, which is the time it takes for the Earth to rotate once relative to the sun. The discrepancy arises because the Earth is also orbiting the sun, causing the position of the sun to shift slightly each day.Understanding sidereal 恒星的 time is crucial for astronomers and navigators alike. For instance, when astronomers want to observe a specific star or celestial event, they must take into account the sidereal 恒星的 timing to ensure that their observations align with the actual positions of these celestial bodies. This precision is vital for making accurate predictions about astronomical phenomena.Furthermore, sidereal 恒星的 time plays a significant role in the field of astrobiology. Scientists studying the potential for life on other planets must consider how the length of a day and year might affect biological rhythms. For example, a planet with a sidereal 恒星的 rotation period significantly different from Earth's could lead to entirely different evolutionary paths for life forms.In navigation, particularly in maritime contexts, understanding sidereal 恒星的 time allows sailors to determine their position more accurately. By using the stars as reference points, navigators can calculate their latitude and longitude effectively. The reliance on sidereal 恒星的 measurements is a testament to humanity's long-standing relationship with the cosmos.In conclusion, the concept of sidereal 恒星的 time enriches our understanding of the universe. It highlights the intricate dance between celestial bodies and the ways in which their movements influence our perception of time. As we continue to explore the cosmos, the importance of sidereal 恒星的 measurements will undoubtedly remain a cornerstone of both scientific inquiry and practical navigation. Embracing this knowledge not only enhances our appreciation of the universe but also deepens our connection to the stars above us. Therefore, the next time you gaze at the night sky, remember the significance of sidereal 恒星的 time and the stories it tells about our place in the cosmos.

在宇宙的广阔空间中，时间的概念往往根据观察的上下文而呈现不同的意义。一个引人入胜的方面是太阳时间和sidereal 恒星的 时间之间的区别。虽然太阳时间是基于太阳在天空中的位置，但sidereal 恒星的 时间是由遥远星星的位置决定的。这种差异看似微妙，却对我们理解天文学和导航有深远的影响。术语sidereal 恒星的 源自拉丁词“sidus”，意为星星。在实际应用中，一个sidereal 恒星的 日大约为23小时56分钟和4秒。这是地球相对于背景星星旋转一次所需的时间。相比之下，太阳日约为24小时，这是地球相对于太阳旋转一次所需的时间。这个差异产生的原因是地球也在围绕太阳公转，导致太阳的位置每天略有变化。理解sidereal 恒星的 时间对天文学家和导航员来说至关重要。例如，当天文学家想要观察特定星星或天文事件时，他们必须考虑sidereal 恒星的 时间，以确保他们的观察与这些天体的实际位置对齐。这种精确性对于准确预测天文现象至关重要。此外，sidereal 恒星的 时间在天体生物学领域也发挥着重要作用。研究其他行星上生命潜力的科学家必须考虑一天和一年的长度如何影响生物节律。例如，旋转周期与地球显著不同的行星，其生命形式可能会走上完全不同的进化路径。在导航，特别是在海洋导航中，理解sidereal 恒星的 时间使水手能够更准确地确定他们的位置。通过使用星星作为参考点，导航员可以有效地计算他们的纬度和经度。对sidereal 恒星的 测量的依赖证明了人类与宇宙之间长期以来的关系。总之，sidereal 恒星的 时间的概念丰富了我们对宇宙的理解。它突显了天体之间复杂的舞蹈，以及它们的运动如何影响我们对时间的感知。随着我们继续探索宇宙，sidereal 恒星的 测量的重要性无疑将继续成为科学探究和实际导航的基石。接受这一知识不仅增强了我们对宇宙的欣赏，也加深了我们与头顶星空的联系。因此，下次当你凝视夜空时，请记住sidereal 恒星的 时间的重要性以及它讲述的关于我们在宇宙中位置的故事。