Chapter 11 - Optical Illusions Found In Nature

Optical illusions abound everywhere. There are a number of special interest which occur in nature.

The apparent form of the sky has attracted the attention of many scientific investigators for centuries. There are many conflicting opinions as to the causes of this appearance of form, but there is general agreement that the sky appears usually as a flattened vault. The flattened vault appearance of the sky is thought by some to explain the apparent enlargement of the sun, moon, and constellations when viewed at the horizon.

In discussing the great illusions of nature, it appears appropriate to introduce the mirage. A mirage is not due to an error of sense of judgment. The eye sees what is presented but the inversions and other peculiar effects are due to variations in the refractive index of the atmosphere.

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Optical Illusions In Nature, Aerial Perspective Optical illusions in found nature.

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