microphotolysis
iridescence
stereoscope
photoresist
portrait lens
light microscope
stop
light
light source
optical
astrograph
photoconverted
planetarium
London smoke
luminoscope
photoflash
spectropolarimeter
astrophotometer
nightscope
photocolorimeter
photochromic eyeglasses
photospectroradiometer
chromascope
optoelectroactive
photochromic glasses
optics
photoelectrocolorimetrically
photomesonic
telextender
mesopic
extreme ultraviolet
reflector
Gunn-Peterson trough
photochromic eyewear
photoenhancer
phototransducing
photoisomerization
fluorodetector
digiscope
luminometer
photoelectrograph
coronagraph
spectacle
microscope
electrochemiluminescent
photoreceiver
photoferroelectrics
densitometer
reflection nebula
photoemit