Abstract
Microgravity has been utilized not only for verifying the theories on diffusion of molecules in the liquid but for understanding the phenomena which are damped by gravity on earth and thus are invisible or not measurable, such asdiffusion controlled growth, surface tension dirven convection (Marangoni convection) or pure homogeneous nucleation. These phenomena have a lot of influences on the growth of crystals. Some microgravity experiments were already started by the present author.
