Prime meridian - Wikipedia
A prime meridian is an arbitrarily chosen meridian (a line of longitude) in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian (the 180th meridian in a 360°-system) form a great circle.
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.
prime meridian - Kids | Britannica Kids | Homework Help
The prime meridian is the imaginary line that divides Earth into two equal parts: the Eastern Hemisphere and the Western Hemisphere. The prime meridian is also used as the basis for the world’s time zones.
Prime Meridian: Definition, History, and Significance
2023年6月26日 · The Prime Meridian is an imaginary line that divides the Earth into Eastern and Western Hemispheres. It is the longitude line with a value of 0 degrees and runs from the North Pole to the South Pole, passing through the Royal Observatory in Greenwich, London.
Meridian | Prime Meridian, Longitude & Latitude | Britannica
The prime meridian is zero degrees longitude and divides Earth into the Western and Eastern hemispheres. It is also known as the Greenwich Meridian because it passes through Greenwich, a borough of London, and terminates at the North and South poles.
Latitude, Longitude, & the Prime Meridian Explained | Britannica
The Prime Meridian is an imaginary line on a map of Earth. It is the starting point for the measuring system called longitude. Longitude is a system of imaginary north-south lines called meridians.
The Prime Meridian: Establishing Global Time and Space
2018年8月31日 · The Prime Meridian is the universally decided zero longitude, an imaginary north/south line which bisects the world into two and begins the universal day. The line starts at the north pole, passes across the Royal Observatory in Greenwich, England, and ends at …
What is the Prime Meridian Why is it important? - Geographic …
2024年6月28日 · The prime meridian is an imaginary line that divides the Earth into two equal parts: the Eastern Hemisphere and the Western Hemisphere. It is also used as the basis for the world’s time zones, making it a crucial reference point for global timekeeping.
What is the difference between prime meridian and central meridian?
2024年6月27日 · The prime meridian plays a crucial role in determining time zones and is used as a basis for measuring distances east and west around the globe. On the other hand, the central meridian is the line of longitude that is chosen as the starting point for mapping a specific area.
Why is it called a prime meridian? - Geographic Pedia - NCESC
2024年6月23日 · The Prime Meridian is crucial in geography as it divides the Earth into two equal halves, known as the Eastern Hemisphere and the Western Hemisphere. It also serves as the basis for the world’s time zones and appears on maps and globes.