Unpowered Flight - Lighter Than Air

Lighter Than Air

Lighter than air flight is only used by man. An unpowered, lighter than air craft is called a balloon.

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Famous quotes containing the words lighter and/or air:

    “Heavy, heavy-hearted people grow lighter and rise occasionally to their surface through precisely that which makes others heavier, through hatred and love.”
    —Friedrich Nietzsche (1844–1900)

    “Just as we are learning to value and conserve the air we breathe, the water we drink, the energy we use, we must learn to value and conserve our capacity for nurture. Otherwise, in the name of human potential we will slowly but surely erode the source of our humanity.”
    —Elaine Heffner (20th century)