  The Plateau-Rayleigh theory essentially explains the breakup of liquid jets
as due to growing perturbations along the length of the jet. The essential idea
is supported by several experiments carried out in the past. Recently, the
existence of a feedback mechanism in the form of recoil capillary waves was
proposed to enhance the effect of the perturbations. We experimentally verify
the existence of such recoil capillary waves. Using our experimental setup we
further show that the wavy nature of the jet surface appears almost right after
the emergence of the jet from the nozzle irrespective of the recoil capillary
wave feedback. Moreover, our experimental results indicate existence of a sharp
boundary, along the length of the continuous jet, beyond which gravitational
effect dominates over the surface tension.
