Visualization is the art of transforming normally invisible phenomena into visual measurable events by utilizing, for example, fluid or solid tracers, refractory techniques, or by changing wavelengths. Reynold’s original experiments in which colored tracer streaks allowed him to distinguish between laminar and turbulent flows is probably one of the first recorded quantitative visualization studies. Imaging involves recreation of the image of the physical entity from data-sets generated by the various imaging techniques, e.g. Interferometry, PIV, tomography, CT, MRI, Ultrasound, as well as other visualization techniques.