{TAIL ~ The phosphor} is used in light source that comprises a UV radiation source to convert efficiently UV radiation to {HEAD ~ visible light} 
{ TAIL ~ The phosphor } is used in light source that comprises a UV radiation source to convert efficiently UV radiation to { HEAD ~ visible light }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD