Equation of Time

简明释义

时差

英英释义

例句

1.The Equation of Time affects the accuracy of sundials throughout the year.

一年中，Equation of Time（时间方程）影响日晷的准确性。

2.Sailors use the Equation of Time to adjust their navigational calculations.

水手们使用Equation of Time（时间方程）来调整他们的导航计算。

3.Understanding the Equation of Time can help you determine the best time for stargazing.

理解Equation of Time（时间方程）可以帮助你确定最佳观星时间。

4.Astronomers calculate the Equation of Time to predict the position of celestial bodies.

天文学家计算Equation of Time（时间方程）以预测天体的位置。

5.The concept of Equation of Time is essential for understanding solar time versus clock time.

理解太阳时间与钟表时间之间的差异，Equation of Time（时间方程）这一概念至关重要。

作文

The concept of the Equation of Time is a fascinating aspect of astronomy that deals with the discrepancy between time as read from a sundial and a mechanical clock. This difference arises due to the elliptical shape of Earth's orbit around the sun and its axial tilt. Understanding the Equation of Time not only enhances our grasp of timekeeping but also deepens our appreciation for the intricate movements of celestial bodies.To comprehend the Equation of Time, we must first recognize how time has been measured throughout history. Ancient civilizations relied on sundials, which used the position of the sun's shadow to indicate the time of day. However, because of the varying speed at which the Earth travels in its orbit, the sundial does not always align perfectly with the mechanical clock. The Equation of Time quantifies this difference, which can be as much as 16 minutes fast or slow at various times of the year.The primary reasons for this variation are twofold: the eccentricity of Earth's orbit and the tilt of its axis. The elliptical shape of the orbit means that Earth moves faster when it is closer to the sun and slower when it is farther away. This phenomenon is described by Kepler's laws of planetary motion. Additionally, the axial tilt causes the sun to rise and set at different angles throughout the year, further complicating the relationship between solar time and clock time.The Equation of Time can be visualized graphically, often represented as a curve that oscillates throughout the year. This curve shows the differences in timekeeping, illustrating periods when sundials run ahead or behind mechanical clocks. For instance, around the beginning of February, sundials are typically about three minutes slow compared to clocks, while in early November, they can be about 16 minutes fast. These variations highlight the complexities of solar time versus standard time.For practical applications, understanding the Equation of Time is particularly valuable for astronomers, navigators, and even everyday people who rely on precise timekeeping. In the age of technology, where GPS and atomic clocks dominate, the historical significance of the Equation of Time reminds us of our reliance on natural phenomena for time measurement. It also serves as a reminder of how far we have come in our understanding of time and space.In conclusion, the Equation of Time is more than just a mathematical formula; it represents the relationship between our perception of time and the natural world. By studying this concept, we gain insight into the dynamics of our planet and its movements through space. It encourages us to appreciate the harmony between science and nature, reminding us that even in our modern era, we are still influenced by the celestial rhythms that govern our existence.

“时间方程”这个概念是天文学中的一个迷人方面，涉及日晷读取的时间与机械时钟之间的差异。这种差异的产生是由于地球绕太阳的椭圆形轨道和其轴倾角的原因。理解“时间方程”不仅增强了我们对时间测量的理解，也加深了我们对天体运动复杂性的欣赏。要理解“时间方程”，我们首先必须认识到历史上时间是如何被测量的。古代文明依靠日晷，利用太阳阴影的位置来指示一天中的时间。然而，由于地球在其轨道中以不同的速度运动，日晷并不总是与机械时钟完美对齐。“时间方程”量化了这种差异，在一年中的不同时间，这种差异可能多达16分钟快或慢。这种变化的主要原因有两个：地球轨道的偏心率和其轴的倾斜。轨道的椭圆形状意味着当地球离太阳更近时，它的运动速度更快，而当距离更远时则更慢。这一现象由开普勒的行星运动定律描述。此外，轴的倾斜导致太阳在一年中以不同的角度升起和落下，进一步复杂化了太阳时间与标准时间之间的关系。“时间方程”可以通过图形可视化，通常表示为一条在一年中波动的曲线。这条曲线显示了时间测量之间的差异，说明了日晷在机械时钟前后运行的时期。例如，在二月初，日晷通常比时钟慢约三分钟，而在十一月初，它们可能快约16分钟。这些变化突显了太阳时间与标准时间之间的复杂性。在实际应用中，理解“时间方程”对于天文学家、航海家甚至依赖精确时间测量的普通人来说都特别重要。在科技时代，GPS和原子钟占主导地位，但“时间方程”的历史意义提醒我们在时间测量中对自然现象的依赖。它也提醒我们，即使在现代时代，我们仍然受到支配我们存在的天体节奏的影响。总之，“时间方程”不仅仅是一个数学公式；它代表了我们对时间的感知与自然世界之间的关系。通过研究这一概念，我们获得了对我们星球及其在太空中运动动态的洞察。它鼓励我们欣赏科学与自然之间的和谐，提醒我们即使在现代时代，我们仍然受到支配我们存在的天体节奏的影响。