If the earth were a perfect sphere how far above the surface of the earth would your eyeball have to be to see exactly half of the universe?
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2007-12-28 20:19:34 · 7 answers · asked by skip 4 in Science & Mathematics ➔ Physics
Just barely above the surface. To dispute my answer to your referenced question, you need to refute my geometry. Remember, everything is idealized (perfect sphere, no atmospheric absorption or obstacles), and that by half I mean 2π steradians.
2007-12-29 07:16:59 · answer #1 · answered by Frank N 7 · 0⤊ 0⤋
0. If your eye is any height above the surface, then you can see more than half the universe (assuming that only the earth is considered to be blocking your view). The reason is that at the surface, there is a tangent plane that divides the universe into two halves (one half on each side of the plane). At any height above the surface, the plane becomes a cone.
2007-12-28 20:28:18 · answer #2 · answered by John B 6 · 4⤊ 0⤋
No, it'd have to be exactly in the middle of the galactic plane for that to happen. Even then stars and other galactic items would get in the way
2007-12-28 20:23:00 · answer #3 · answered by Anonymous · 0⤊ 1⤋
nope you will not see exactly half, because earth is not the center of the universe
2007-12-28 20:30:40 · answer #4 · answered by aznaquifer 2 · 0⤊ 2⤋
Who said you would see half?
2007-12-28 20:23:30 · answer #5 · answered by Anonymous · 0⤊ 2⤋
yes in all likely hood you would not see half... you are assuming the eart is in the exact middle of the universe...
2007-12-28 20:27:10 · answer #6 · answered by Anonymous · 0⤊ 3⤋
our eyes r not so beveloped to seee those
2007-12-28 20:23:22 · answer #7 · answered by yash 3 · 0⤊ 3⤋