{HEAD ~ This vibration}, perceivable as {TAIL ~ noise}, must produce some triboelectric effect which electrizes uncharged particles, too 
{ HEAD ~ This vibration } , perceivable as { TAIL ~ noise } , must produce some triboelectric effect which electrizes uncharged particles , too
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH