
The oscilloscope graph shows both touched and untouched effects on ringing in the resonant cavities. The two waveforms on the left are untouched, while the two shorter duration waveforms on the right indicate a touched cavity.

The oscilloscope graph shows both touched and untouched effects on ringing in the resonant cavities. The two waveforms on the left are untouched, while the two shorter duration waveforms on the right indicate a touched cavity.