WList of refractive indices
WAcrylate polymer
WArsenic triselenide
WArsenic trisulfide
WBarium fluoride
WCadmium selenide
WCalcite
WOptical properties of carbon nanotubes
WCR-39
WGallium phosphide
WGermanium
WCalculation of glass properties
WHydrogen silsesquioxane
WIceland spar
WLiquid crystal
WLithium fluoride
WMagnesium fluoride
WMagnesium oxide
WMETATOY
WNeutron supermirror
WNicol prism
WPhosphor
WPoly(methyl methacrylate)
WPolycarbonate
WPotassium bromide
WRacemic acid
WSapphire
WShpolskii matrix
WSpectralon
WSpeculum metal
WSplit-ring resonator
WStrontium fluoride
WStructural coloration
WYogo sapphire
WYttrium aluminium garnet
WZBLAN
WZinc selenide
WZinc sulfide