Weber's Law

Definition: The increase in strength of a stimulus to be just perceptible is directly proportional to strength of the original stimulus e.g. if original stimulus is dark, increase in light required to be just perceptible is very small; if original stimulus is very bright, increase in light required is large. * The response to a stimulus is proportional to the logarithm of the stimuls. * Applies only to limited range of perception.

Related Terms: Fechner's Law

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