When1: 1860
When2: 1876
Who: Gustav Theodor Fechner [Fechner, Gustav Theodor]
What: philosopher/physicist
Where: Germany
works\ Elements of Psychophysics [1860]; Pre-school of Aesthetics [1876]
Detail: He lived 1801 to 1887. Sensation intensity is proportional to logarithm of stimulus {Weber-Fechner law, Fechner} {Weber's law, Fechner}. Logarithmic scale measures sensation intensity: S = k * log(I) + A, where S = sensation, k = relative-difference ratio, I = intensity, and A = absolute threshold. The law applies if sensations have categories {category scaling}. To detect just noticeable difference in sensation at higher intensities, stimulus intensity must increase in geometrical proportion. Sense qualities and psychological functions relate to stimuli {psychophysics, Fechner}.
Aesthetics
Method of paired comparisons can judge aesthetic preferences.
Social Sciences>Psychology>History>Perception
6-Psychology-History-Perception
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Date Modified: 2022.0224