{HEAD ~ The device} includes a chamber having a heating element, {TAIL ~ an inlet}, and a constricted egress channel 
{ HEAD ~ The device } includes a chamber having a heating element , { TAIL ~ an inlet } , and a constricted egress channel
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH