振频

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.

频 = 步 + 页 : Pocahontas (pi) is repeatedly (频) shaking a five-paced viper (步) in the encampment's kitchen ((e)n2). She wants to find out the eigenfrequency (频) of the viper by shaking it at different holding points. She marks her findings on a sheet of paper (页), and next to her she stores a whole stack of papers (页) she already published on the subject.