Grain Boundary Diffusion

Famous quotes containing the words grain and/or boundary:

“He never doubts his genius; it is only he and his God in all the world. He uses language sometimes as greatly as Shakespeare; and though there is not much straight grain in him, there is plenty of tough, crooked timber.”
—Henry David Thoreau (1817–1862)

“Setting limits gives your child something to define himself against. If you are able to set limits without being overly intrusive or controlling, you’ll be providing him with a firm boundary against which he can test his own ideas.”
—Stanley I. Greenspan (20th century)