where R0 and {TAIL ~ ω0} are constants and t is {HEAD ~ a time}; the scanning operation is performed at a constant angular velocity 
where R0 and { TAIL ~ ω0 } are constants and t is { HEAD ~ a time } ; the scanning operation is performed at a constant angular velocity
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH