The spillway empties into a stilling basin long, designed to dissipate erosion. One example of an energy dissipating use is a hydraulic jump stilling basin. The chute is followed by a stilling basin before rejoinging the natural river course. Pratyahara is the stilling of the thoughts so that the mind becomes quiet. In July 1965 another slide occurred in the area of the stilling basin. The German ophthalmologist Jakob Stilling is credited with discovering the antiseptic properties of gentian violet. Stilling wells and waveguides are used to prevent errors caused by these factors. It was described by Stilling in 1859 and Krause in 1875. Other variations include "keeping still, mountain" and "stilling". The King was often stilling on a stool, resembling the sun.