with the "australians standing on their heads" bit of sillyness excluded
2006-11-20 06:33:14 · 13 answers · asked by ? 5 in Society & Culture ➔ Other - Society & Culture
Newton's law of Physics.
2006-11-20 09:16:19 · answer #1 · answered by tommynocker001 4 · 0⤊ 0⤋
The term up as exhibited on this earth is defined as a direction away from the center of the earth perpendicular to the surface - 180 degrees out of phase with the force of gravity.
2006-11-20 14:39:02 · answer #2 · answered by Doug R 5 · 1⤊ 0⤋
From where you are on the earth (no matter where that is), "up" is a line from the center of the earth to you and extending out to infinity.
Keep in mind that "up" is completely a relative term. It depends on where you are on the earth as above. The earth's axis is tilted about 23 degrees from the plane of our orbit around the sun, so "up" for the earth isn't even it's rotational axis. Our solar system's plane (in which most of the planets orbit) isn't aligned with the plane of our sun's rotation around our galaxy's center, so "up" is relative for our solar system, too. And our galaxy's plane doesn't align with the galaxy's movement among the local group of galaxies (which includes the Andromeda galaxy, among others), so "up" is relative for our galaxy also.
We define local coordinate systems that work for local tasks. But it's all relative :)
2006-11-20 14:48:57 · answer #3 · answered by Anonymous · 1⤊ 0⤋
the vertical line perpendicular to the sphere is "up" . or imagine an extension of the line from where you are standing to the center of the earth .that line can be found commonly using a plumbob .
2006-11-20 14:37:49 · answer #4 · answered by Anonymous · 1⤊ 0⤋
Up is always perpendicular to the Earth's core, for whatever vector you're standing at.
2006-11-20 14:35:35 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Gravity!
2006-11-20 14:35:08 · answer #6 · answered by CrankyYankee 6 · 1⤊ 0⤋
up is relative and it is also personal. wherever you are on the face of the earth up will be the opposite direction of which gravity is pulling you.
2006-11-20 15:55:55 · answer #7 · answered by nessie 3 · 1⤊ 0⤋
who knows, we may be stuck in a vertual reality with some aliens controling what we are doing and thinking
2006-11-20 14:38:37 · answer #8 · answered by Ruth F 2 · 1⤊ 0⤋
You are thinking in 2D, but we exist in 3D (or 4D to 11D if you are a M theorist).
2006-11-20 14:38:12 · answer #9 · answered by Anonymous · 1⤊ 0⤋
Up is really Out. In space there is no up.
2006-11-20 14:35:35 · answer #10 · answered by Kango Man 5 · 2⤊ 0⤋