new technique now makes it possible for us to film minute and extremely rapid processes such as chemical reactions and brain activity in animals. The researchers from Lund University, Sweden, demonstrated this by filming the passage of light through a distance equal to the thickness of a sheet of paper. The object is exposed to a series of short laser flashes each of which is given a code. These are reflected by the object and are captured in one photograph. Subsequently, they are separated using an encryption key. This method captures several images on one screen and then sorts them out.
This innovative method can help researchers photograph even those events that take place in time durations as short as a picosecond or femtosecond.