A technique for visualizing a velocity field in an entire plane has been developed by taking so-called "Doppler Pictures" using Michelson interferometry. With the Doppler Picture Velocimetry (DPV) information about the instantaneous and local velocities of tracers passing through a light sheet are available. The tracer particles are illuminated by a laser light source and the frequency of the scattered light, in case of moving particles, is shifted by the ...
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