Ernst Heinrich Weber (1795–1878) was a German physiologist who did fundamental research on the sense of touch. In his De Tactu (1834) he stated what became the Weber-Fechner Law: that there is a threshold of sensation that must be passed before an increase in the intensity of the stimulus can be detected. (M 40705) _ _.
Discovered on 3-11-1989 in La Silla by Elst, E. W.