When a water drop is added into a hot oil both of about 150°C, the water drop reaches a superheated state and at some point and undergoes explosive boiling. At this time, we found that not only the oil but also the beaker containing the oil itself jumps. The jump of the beaker is due to the change in hydrodynamic pressure caused by the oscillation of the vapor bubbles. By controlling the volume and position of the bubbles, the jumping height and direction can be determined.
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