Register to reply

Where is the Center of the Earth?

by Nash
Tags: earth
Share this thread:
Nash
#1
Mar20-07, 03:08 PM
P: 7
The Earth is not a perfect sphere, so the distance from the center of mass of the Earth to a point on its surface is not the same for all points. So, what point on the Earth's surface has the shortest distance to the center of mass--what point is "directly above" the center? All sorts of civilizations have historically claimed to be located at the center of the Earth, but now that we know the real shape of the Earth, shouldn't we know the real center?
Phys.Org News Partner Earth sciences news on Phys.org
russ_watters
#2
Mar20-07, 05:29 PM
Mentor
P: 22,313
The earth is an oblate (flattened) sphereoid, therefore the points nearest the center are the poles. Also, any points on the ocean at the same latitude as each other are equadistant from the center of the earth.
what point is "directly above" the center?
Since the center is the center, every point on earth's surface is directly above it.
All sorts of civilizations have historically claimed to be located at the center of the Earth...
No they didn't. Many did claim to be at the center of the universe, though.


Register to reply

Related Discussions
Center of the Earth Classical Physics 74
Why is the Center of the Earth so Hot? Earth 44
The geometric center of the Earth and the center of mass Classical Physics 9
Will we ever get to the center of the earth? Earth 6
GR to the center of the Earth! Special & General Relativity 1