Abstract
Authors are interested in the flow visualization and in the information visualization. In the present report, authors introduced two topics of our research activities. One is the flow visualization supported by the high speed camera for understanding a physical phenomenon. The other is the information visualization to understand overall data about the accidents in nuclear power plants. The flow visualization was applied to an experiment about the water-sodium reaction. The gas jet injected into water at high pressure was investigated using the high speed camera. Visualizing a huge data of NUCIA was performed and a 2D-3D mixed visualization method was proposed. It was thought that the mixed visualization method could help the public to share the information.
