Today, after the rain, I watched a drop. The Sun rose over the hill, behind an oak, and the sun-backed drops formed along the eves. As the drop grew, it quivered, throwing off purple, green, yellow, then gathered weight, pulling toward Earth's center and readying it for a free-fall, its shape changed...and breaking free, it went spherical--all the surface equi-distant from the center--ceased being a spectrum--clear light