Phase Change Materials

Famous quotes containing the words phase, change and/or materials:

    “The problem of the twentieth century is the problem of the color-line—the relation of the darker to the lighter races of men in Asia and Africa, in America and the islands of the sea. It was a phase of this problem that caused the Civil War.”
    —W.E.B. (William Edward Burghardt)

    “To the sick the doctors wisely recommend a change of air and scenery.”
    —Henry David Thoreau (1817–1862)

    “In daily life what distinguishes the master is the using those materials he has, instead of looking about for what are more renowned, or what others have used well.”
    —Ralph Waldo Emerson (1803–1882)