FIGS 6 and 7 are spectrums of the flexural and torsional vibrations, respectively, of cantilever 120 tapping on {HEAD ~ a sample surface} at {TAIL ~ the fundamental flexural resonance frequency} 
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FIGS 6 and 7 are spectrums of the flexural and torsional vibrations , respectively , of cantilever 120 tapping on { HEAD ~ a sample surface } at { TAIL ~ the fundamental flexural resonance frequency }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL