What is rolling?

Rolling

Rolling is a type of motion that combines rotation (commonly, of an axially symmetric object) and translation of that object with respect to a surface (either one or the other moves), such that, if ideal conditions exist, the two are in contact with each other without sliding.

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Famous quotes containing the word rolling:

    On Linden, when the sun was low,
    All bloodless lay the untrodden snow,
    And dark as winter was the flow
    Of Iser, rolling rapidly.
    Thomas Campbell (1774–1844)

    They mean to tell us all was rolling blind
    Till accidentally it hit on mind
    Robert Frost (1874–1963)

    It is only when we are very happy that we can bear to gaze merrily upon the vast and limitless expanse of water, rolling on and on with such persistent, irritating monotony, to the accompaniment of our thoughts, whether grave or gay. When they are gay, the waves echo their gaiety; but when they are sad, then every breaker, as it rolls, seems to bring additional sadness, and to speak to us of hopelessness and of the pettiness of all our joys.
    Emmuska, Baroness Orczy (1865–1947)