Gustav Fechner (1801–1887) was a German philosopher, physicist, and psychologist who is best known for founding psychophysics, a field that explores the relationships between physical stimuli and the sensations and perceptions they produce. Fechner’s work laid the groundwork for modern experimental psychology. One of his most significant contributions was the formulation of Fechner's Law, which quantifies the relationship between the intensity of a stimulus and the resulting sensation.
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