local mean noon

简明释义

地方平午

英英释义

例句

1.The concept of local mean noon can vary depending on your geographical location.

根据您的地理位置，当地平均正午的概念可能会有所不同。

2.When setting up the telescope, ensure you adjust it to local mean noon for accurate tracking of stars.

在设置望远镜时，请确保将其调整到当地平均正午以准确跟踪星星。

3.The train schedule is based on local mean noon, which means it might not align perfectly with your watch.

火车时刻表是基于当地平均正午，这意味着它可能与您的手表不完全一致。

4.Farmers often use local mean noon to plan their daily activities, as it helps them optimize sunlight exposure.

农民经常使用当地平均正午来计划他们的日常活动，因为这有助于他们优化阳光照射。

5.In astronomy, local mean noon is crucial for making precise observations of celestial events.

在天文学中，当地平均正午对精确观察天体事件至关重要。

作文

In our daily lives, we often take for granted the concept of time and how it is measured. One important aspect of timekeeping is the idea of noon. However, not all noons are created equal. This brings us to the term local mean noon, which refers to the average time at which the sun crosses the local meridian. Understanding this term can enhance our appreciation of timekeeping and its significance in our lives.To grasp the concept of local mean noon, we must first understand how time zones and the rotation of the Earth work. The Earth rotates on its axis once every 24 hours, which creates the cycle of day and night. As the Earth spins, different parts of the planet experience sunlight while others are in darkness. Noon, in a general sense, is when the sun is at its highest point in the sky. However, due to the Earth's curvature and its axial tilt, this moment does not occur at the same clock time for every location.This is where local mean noon becomes relevant. It is a standardized way of defining noon for a specific location, taking into account the local meridian. Essentially, it is the average time at which the sun reaches its zenith over a year. For example, if you live in a region that is located west of the standard time zone, your local mean noon may occur later than 12:00 PM on the clock. Conversely, if you are east of the time zone, your local mean noon might occur earlier.The significance of local mean noon extends beyond just timekeeping; it also plays a role in navigation, agriculture, and various scientific fields. In navigation, sailors and pilots rely on accurate time measurements to determine their position relative to the Earth. Knowing the local mean noon helps them calculate their longitude and maintain their course.In agriculture, farmers have traditionally used the position of the sun to plan their planting and harvesting schedules. By understanding when local mean noon occurs, they can optimize their activities based on the amount of daylight available for their crops. This connection between the sun's position and agricultural practices highlights the importance of understanding solar time.Moreover, the advent of technology and global communication has made it easier for people to coordinate activities across different time zones. However, despite these advancements, the fundamental principles of local mean noon remain relevant. As we schedule meetings or plan events, being aware of the differences in local times can help prevent confusion and ensure smooth interactions.In conclusion, the term local mean noon represents more than just a point in time; it embodies the intricate relationship between our planet's movement and our understanding of time. By recognizing the significance of local mean noon, we can appreciate how timekeeping affects various aspects of our lives, from navigation to agriculture, and even our daily schedules. As we continue to navigate an increasingly interconnected world, understanding concepts like local mean noon will be essential for maintaining harmony in our interactions with one another and with the natural world around us.

在我们的日常生活中，我们常常理所当然地认为时间的概念以及它是如何被测量的。时间记录的一个重要方面是正午的概念。然而，并不是所有的正午都是相同的。这就引出了术语当地平均正午，它指的是太阳穿过当地子午线的平均时间。理解这个术语可以增强我们对时间记录及其在我们生活中的重要性的欣赏。要理解当地平均正午的概念，我们必须首先了解时区和地球自转的工作原理。地球每24小时在其轴上自转一次，这创造了昼夜交替的循环。当地球旋转时，地球的不同部分经历阳光，而其他部分则处于黑暗之中。一般来说，正午是太阳在天空中达到最高点的时候。然而，由于地球的曲率和轴倾角，这一时刻并不在每个地点都以相同的钟表时间发生。这就是当地平均正午变得相关的地方。它是为特定位置定义正午的标准化方式，考虑到当地子午线。基本上，它是太阳在一年内达到天顶的平均时间。例如，如果您居住在一个位于标准时区以西的地区，您的当地平均正午可能会在时钟上晚于12:00 PM。相反，如果您位于时区以东，您的当地平均正午可能会更早发生。当地平均正午的重要性不仅限于时间记录；它还在导航、农业和各种科学领域中发挥着作用。在导航中，水手和飞行员依靠准确的时间测量来确定他们相对于地球的位置。了解当地平均正午有助于他们计算经度并保持航向。在农业中，农民传统上利用太阳的位置来规划他们的种植和收获时间表。通过了解当地平均正午何时发生，他们可以根据作物可用的日光量优化他们的活动。太阳位置与农业实践之间的这种联系突显了理解太阳时间的重要性。此外，科技和全球通信的出现使人们更容易在不同的时区协调活动。然而，尽管取得了这些进展，当地平均正午的基本原则仍然相关。当我们安排会议或计划活动时，意识到当地时间的差异可以帮助防止混淆，确保顺利的互动。总之，术语当地平均正午代表的不仅仅是一个时间点；它体现了我们星球运动与我们对时间理解之间复杂的关系。通过认识到当地平均正午的重要性，我们可以欣赏到时间记录如何影响我们生活的各个方面，从导航到农业，甚至我们的日常日程。随着我们继续在一个日益互联的世界中航行，理解像当地平均正午这样的概念将对维护我们与他人及我们周围自然世界的和谐至关重要。