Page "Gustav Fechner" Paragraph 5

Though holding good within certain limits only, the law has been found to be immensely useful.

Fechner's law implies that sensation is a logarithmic function of physical intensity, which is impossible due to the logarithm's singularity at zero ; therefore, S. S. Stevens proposed the more mathematically plausible power-law relation of sensation to intensity in his famous 1961 paper entitled " To Honor Fechner and Repeal His Law.