
 Spiral Notebook (Site not responding. Last check: 20071107) 
  In mathematics, a spiral is a curve which turns around some central point or axis, getting progressively closer to or farther from it, depending onwhich way you follow the curve. 
  For compound 3d spirals, such as the spherical spiral described below, h increases with θ on one side of apoint, and decreases with θ on the other side. 
  A spherical spiral (rhumb line) is the curve on a sphere traced by aship traveling from one pole to the other while keeping a fixed angle (but not a right angle) with respect to the meridians of longitude, i.e. 
 www.elusiveeye.com /side11320spiralnotebook.html (341 words) 
