What makes the sun appear directly overhead on the summer solstice? I know the tilt of the earth has something to do with it but :
*Is the curve of the earth steeper or different in that part of the world and that also contributes? It appears so when you look at Miami and the tropics ( from the side ) of a Google Earth download
* Is it necessary to go somewhat below the Tropic of Cancer to get tropical level sunlight intensity, vegetation etc. or is Miami close enough to the tropic line to get those benefits most of the year?
*If you had to compare latitude 25 N to the true official tropics ( 23N - 23 S) how does it compare?
I am curious about this as I would like to go to San Juan, Puerto Rico and compare it with Miami. But if they are very a like then I could save money and just stay here.
Edited by Rick Santos, 29 September 2011 - 07:48 AM.