Formation of shockwaves in gel

Creation of shockwaves during the creation of cavitation in gel with shadowgraph imaging , camera shutter 250 ns, 500.000 fps. Left video taken with cw metal halide lamp. Right video taken with CAVILUX Smart laser illumination with a 20 ns illumination pulse. Video material by Prof. Umemura and Prof. Yoshizawa, Tohoku University, Japan in co-operation with Nobby Tech Ltd.