2006-10-06 06:01:38 · 15 answers · asked by smac1 2 in Science & Mathematics ➔ Other - Science
Yes, for example, the cubic crystal structure of NaCl (common salt) molecule.
2006-10-06 06:11:47 · answer #1 · answered by ideaquest 7 · 0⤊ 0⤋
A tree that goes straight up from flat ground would give you a right angle.
2006-10-06 06:06:53 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Light waves.
The magnetic field is perpendicular to the electric field.
If you mean visible nature...there are trees and branches, certain insects, thought they may not be 100% perfectr all the time.
2006-10-06 06:16:54 · answer #3 · answered by Anonymous · 0⤊ 0⤋
A Waterfall
2006-10-06 06:12:47 · answer #4 · answered by dink2006 3 · 0⤊ 0⤋
How about anything that hangs directly down? It's at 90 degrees to the ground.
Rain hitting the ground when there's no wind.
2006-10-06 08:11:06 · answer #5 · answered by Mike N 2 · 0⤊ 0⤋
I can think of two: orthogonal electrical fields and magnetic fields in any current; and certain crystal structures at the atomic level.
2006-10-06 06:08:55 · answer #6 · answered by MojoAndy 2 · 0⤊ 0⤋
Yes, think about all the square heads running around.
2006-10-06 06:20:03 · answer #7 · answered by Jazz 3 · 0⤊ 0⤋
Ask the Geology people. Seems that the correct crystalline structure would give you one.
2006-10-06 06:03:24 · answer #8 · answered by NoPoaching 7 · 0⤊ 0⤋
Yes, almost everywhere you look from cloud formations, to trees, to rocks, to minerals, to humans and various other animals.
2006-10-06 06:30:49 · answer #9 · answered by Vita 3 · 1⤊ 0⤋
Mathematical entities are perfect, and there is nothing perfect in Nature, so no.
2006-10-06 06:04:33 · answer #10 · answered by Pseudo Obscure 6 · 0⤊ 0⤋