raypath
glowing
radiance
glow
beam steering
absorption spectrum
photo-
mediumwave infrared
infrared spectrum
photoinduced
family Torpedinidae
angle of reflection
absorbance
isocentre
optical density
Torpedinidae
photographic density
radiant
transmission density
light wave
light unit
fluorescence
tetraradial
cosmic infrared background
beam
undulation
radiationally
ray
electron beam
cosmic radiation
actino-
gamma ray
band
solar radiation
gamma radiation
octoradial
eradiation
ultraviolet spectrum
asteriated
background radiation
photoinitiated
transparence
transparency
upscattering
pencil
cosmo-
source of illumination
diffused
triradial
focus
electropollution
cosmic ray
radioactivity
gyrotropy
radial
radiately
opacity
ultraviolet radiation
irradiated
light spectrum
photoelectric effect
photoelectroactivity
radiatory
penetrometer
ground wave
electronic reconnaissance
scintillation counter
emission spectrum
stellate
radiate
gyratonic
scattering function
monochromatic
caustic
radiobiophysics
radiology
lightray
atomic spectrum
homochromatic
radioscopy
actinism
photoemission
BLRG
Tyndall effect
radiocautery
diacaustic
radiotropism
N-ray
electromagnetics
electromagnetism
backscattering