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)

    His talk was like a spring, which runs
    With rapid change from rocks to roses:
    It slipped from politics to puns,
    It passed from Mahomet to Moses;
    Beginning with the laws which keep
    The planets in their radiant courses,
    And ending with some precept deep
    For dressing eels, or shoeing horses.
    Winthrop Mackworth Praed (1802–1839)

    Though the hen should sit all day, she could lay only one egg, and, besides, would not have picked up materials for another.
    Henry David Thoreau (1817–1862)