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a reflexive eyeblink

spectral emanations

index of refraction

a refraction of light, called double refraction

reflecting light

the spectrum of visible rays of light

a parabolic reflector for light radiation

the reflection factor

a holophote

reflection of light

spectroscopic analysis

plane-polarized light

refracted light

reflected light

radiative recombination

an optical spectrum consisting of narrowly spaced lines, called band spectrum

a luminous body

a luminary

in optics, a phenomenon called total reflection

polarized light

a sensitized film

radial symmetry

the reflection of light

a ray of reflected light

refraction of light

the spectrum of infrared radiation

an emission spectrum called line spectrum

a paraboloidal reflector antenna

a tactile reflex

the visible part of a spectrum