When a water drop falls on an oscillating soapy water surface it is observed that coalescence of the
drop is inhibited because the drops are bouncing on the surface like on a trampoline. In our
research we made experimental and theoretical investigations to an undeformable drop on a deformable
bath. We described the vertical movement, predicted the critical bouncing threshold and also made
experiments to the effects of an increased Weber number and the horizontal movement of the drop
caused by a vertical movement.