Shadow

Shadow

A shadow is an area where direct light from a light source cannot reach due to obstruction by an object. It occupies all of the space behind an opaque object with light in front of it. The cross section of a shadow is a two-dimensional silhouette, or reverse projection of the object blocking the light. The sun causes many objects to have shadows and at certain times of the day, when the sun is at certain heights, the lengths of shadows change.

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Famous quotes containing the word shadow:

    Mark where the pressing wind shoots javelin-like
    Its skeleton shadow on the broad-backed wave!
    Here is a fitting spot to dig Love’s grave;
    George Meredith (1828–1909)

    the shadow of a difference
    falling between
    note and note,
    a hair’s breadth
    defining them.
    Denise Levertov (b. 1923)

    At middle night great cats with silver claws,
    Bodies of shadow and blind eyes like pearls,
    Came up out of the hole, and red-eared hounds
    With long white bodies came out of the air
    Suddenly, and ran at them and harried them.
    William Butler Yeats (1865–1939)