Author 'Boucher Marc dit de Meilh' (Id 121279 ) : The ball falls in water several kilometers / hour (meters a second.) It is composed of many molecules in attraction ... Antagonism between internal and external molecules, where different forms of water droplets, beads, bubbles. The drops are not pearls or bubbles ... There is a distinction between these terms or concepts, and these spheres. When the drop in its field of attraction meet its platform (the impact) it tends to flatten, deform ... The bubbles, when they bounce, take such different forms of shock due to the attraction: finding a drop ... we see shapes appear and be completed in spheres or bubbles here. Marc Boucher said Meillan. : 14: