Figure 6. (a) The schema of an experimental model and an "aurora sign". (b) Experimental ultrasound. The scanner is submerged in the water and a sheet of vinyl packing material is attached outside the water bag, displaying an "aurora-like" image.
Figure 6. (a) The schema of an experimental model and an "aurora sign". (b) Experimental ultrasound. The scanner is submerged in the water and a sheet of vinyl packing material is attached outside the water bag, displaying an "aurora-like" image.