What is the Prime Meridian - and why is it in Greenwich?
Learn why the Prime Meridian is in Greenwich and how it was chosen as the zero degrees longitude for the world. Explore the Royal Observatory, the instruments an…
Greenwich meridian | Definition, History, Location, …
Learn about the Greenwich meridian, also known as the prime meridian, which was the standard of longitude and time for over a century. Find out how it was established, how it changed, and where it is located on Earth.
Prime Meridian: Definition, History, and Significance
2023年6月26日 · Learn what the Prime Meridian is, where it is located, and why it is important for navigation and timekeeping. The Prime Meridian is the imaginary line that divides the Earth into Eastern and Western Hemispheres and …
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Prime Meridian - National Geographic Society
2023年10月19日 · The prime meridian is the line of 0° longitude, the starting point for measuring distance both east and west around Earth. The prime meridian is arbitrary, meaning it could be chosen to be anywhere. Any line of …
本初子午线 - 百度百科
英文名称：prime meridian 0°经线 ，是计算东西经度的起点。 1884年国际会议决定用通过英国 格林威治 （Greenwich）天文台原址 子午仪 中心的经线为本初子午线。