1)When photographs are taken of the Sun in ultraciolet light, the Sun appears to be slightly larger in diameter than it appears in visible light photographs. Why is this?
2)Explain why our Sun is able to exhibit "diggerential rotation," while it is inpossible for the Earth to rotate in such a manner.
2006-11-01 14:42:25 · 2 answers · asked by amy 1 in Science & Mathematics ➔ Astronomy & Space
1) The Sun would look slightly larger because the "surface" you are seeing is not the photosphere (which emits mostly visible light) but is the corona, which is hotter and thus emits higher-energy light.
2) Solid objects cannot exhibit differential rotation, only liquid and gaseous objects can.
2006-11-03 05:06:41 · answer #1 · answered by kris 6 · 0⤊ 0⤋
First, and don't take this the wrong way, but double check what you've quoted. You misspelled a few things.
I cannot explain your first question without doing some research that i do not wish to do.
Anyway, the second question is explained by the fact that the Sun is all gaseous, and the earth is not.
The solid part of the earth all spins together. The various layers of hydrogen and helium in the Sun can all spin at different rates. This mixing of different areas is possibly what causes the 11 year sun spot cycle. Every 11 years or so the Sun undergoes a period of intense magnetic activity.
2006-11-01 22:53:46 · answer #2 · answered by quntmphys238 6 · 0⤊ 0⤋