a) One late spring or early summer day, bright and clear.
b) One oak tree.
c) One star, approximately 93,000,000 miles distance, and which is an hour or two before or after local meridian.
d) One breeze.
e) A shady spot in which to sit, which will place the oak tree in between yourself and the star.
Stare at the oak tree for a while. Observe the patterns of light and shadow on its leaves. When the breeze moves the leaves, those that catch the light will glitter, and it will look as though the foliage of the tree is made of rippling water.
