A Study of Splashes

t. No one has yet examined what happens when a rough sphere enters a liquid with a very high velocity. That the motion set up

, and though in the light of our present knowledge we may conjecture the kind of difference to be expected, yet experience has taught

f providing darkness and an electric spark. But the difficulties of contriving an exposure of the whole lens short enough to prevent blurring, either from the motion of the object, or f

drodynamics desires to be able to trace. His study is so difficult that even in the apparently simple case of the gently-undulating surface of deep water, the reasoning necessary to discover the real path of any particle can at present only be followed by the highly-trained mathematician. In other and more complicated cases such as are exemplifie

rontispiece, which exhibit the splash of a projectile on striking the steel armour-plate of a battleship. These are ordinary photographs taken after the pla

have studied. There is the same slight upheaval of the neighbouring surface, the same crater, with the same curled li

f the motions set up in a liquid in an analogous case, it may be possible to deduce information about the distribution of internal stress