ABSTRACT
The process of looking at a gradually deforming object while simultaneously viewing its holographic image is called 'Real-Time HI'. Alternately, the technique called 'Double Exposure HI' is used. In this technique, the holographic plate is exposed once at the initial and then at a subsequent loading stage. Two holograms are hence made on the same plate with two different loads on the object. When this plate is developed and illuminated with the reference light, the image of the object is formed and it contains a fringe pattern corresponding to the displacement between the two loading stages.
