A fluid physics equipment was developed for in-situ monitoring of fluid phenomena under the microgravity condition dedicated for use at Kamisunagawa Dropshaft. Schlieren optics was designed to observe distribution of temperature and concentration in the fluid. Light scattering device was also available for the diffusion on the interface, nucleation and phase separation phenomena. The restriction of Rayleigh convection in an experimental cell was shown as an example of a free fall.
