{TAIL ~ Molecules} having {HEAD ~ their moments} oppositely aligned will be defocused away from the axis 
{ TAIL ~ Molecules } having { HEAD ~ their moments } oppositely aligned will be defocused away from the axis
TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH