抄録
New method has been proposed of recording holographic information continuously with time. This new type of holography has been named as "streak holography." By the analysis of the record, it is possible to obtain the trajectory of the object in 3-dimensional space. A streak camera system has been constructed for this purpose. A ring-shaped film mounted on a thin duralmin disk has been driven to rotate by an air turbine spindle. Feasibility of the system has been examined by a simple experiment like free fall of small glass particles illuminated by an Ar laser.