Why particular angles?
2006-09-09 04:45:57 · 6 answers · asked by Ejsenstejn 2 in Science & Mathematics ➔ Biology
It would be cool to have an eye hemisphere on the top of our heads with 360 degree vision, but wearing a hat would blind us.
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http://georgiadis.googlepages.com/
2006-09-09 04:55:40 · answer #1 · answered by hudef 2 · 0⤊ 1⤋
I'm guessing you're asking about optical instruments such as telescopes, binoculars, microscopes and telephoto camera lenses. They have a small field of view because they magnify the image. Magnification means enlarging a narrow angular width to a "normal" angular width. The magnified image presented to you has a normal sized field of view.
2006-09-09 12:22:51 · answer #2 · answered by kirchwey 7 · 0⤊ 0⤋
Obstructions.
2006-09-09 11:48:14 · answer #3 · answered by Iknowthisone 7 · 0⤊ 0⤋
Your height from the ground. The curvature of the earth.
2006-09-09 11:52:09 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Trees !
2006-09-09 15:12:32 · answer #5 · answered by voddybabe 4 · 0⤊ 0⤋
A HELMET, A SKYCAP, parts of your car, etc.
2006-09-09 11:48:21 · answer #6 · answered by runlolarun 4 · 0⤊ 0⤋