optical phenomenon

RAINBOW
List of words for the clue optical phenomenon from the crossword:
MIRAGE REM DISTORTION ABERRATION POLARIZATION POLARISATION PHI IMAGE FRINGE LENS FIBER ELNINO TIDE PRISM LASER ECHO MEME NINO AURORA
WordClue
EVENTphenomenon
FIBERoptical or nerve
LASERoptical device
CAMERAoptical device
MIRAGEnaturally occurring optical phenomenon
BOILINGbulk phenomenon
CROWDINGvisual phenomenon
PERISCOPEoptical device
PROJECTORoptical device
TELESCOPEoptical device
WHIRLWINDweather phenomenon
BINOCULARSoptical device
MICROSCOPEoptical device
SLIPSTREAMfluid dynamics phenomenon
THEODOLITEoptical device
REFRACTOMETERoptical device
FIBERoptical or nerve
CONFIDENCEoptimism