What causes the kaye effect?

Question

What causes the kaye effect?

Answer 1

The Kaye Effect is a property of complex liquids. While pouring one viscous mixture of an organic liquid onto a surface, the surface suddenly spouted an upcoming jet of liquid which merged with the downgoing one.

This phenomenon has since been discovered to be common in all shear-thinning liquids (liquids which thin under shear stress). Common household liquids with this property are liquid hand soaps, shampoos and non-drip paint.

This effect is usually unnoticed because it lasts 300 miliseconds.