振蕩

振 = 扌 + 辰 : James II of England (zh) got a birthday cake (辰) and he wants to find out whether it is made with gelatin or pectin. In the encampment's bathroom ((e)n4) he therefore slaps the cake several times with a toy claw (扌) to make it vibrate, and to determine the gelling agent by the resonance (振) frequency of the cake.

荡 = 艹 + 汤 : Don Quixote (d) messed up his artificial lawn (艹) with soup (汤) in the anglepod's bathroom (ang4). After washing (荡) and shaking (荡) the lawn he checks with an oscilloscope (荡) to see if there are still soup particles left on the lawn.