Brackett series
Paschen series
Humphreys series
Pfund series
midinfrared
hydrogen line
hydrogen spectral series
infrared
infrared spectrum
mediumwave infrared
cosmic infrared background
light spectrum
infrared frequency
fine structure
hydrogen spectrum
extreme ultraviolet
ultraviolet C
Lyman series
infrared ray
Stark effect
positive column
multiplet
frost line
Herbig-Haro object
longwards
iodoxole
Fraunhofer line
Balmer series
elves
hexahydro
halogen
radiospectrometry
coreshine
waterhole
thiadiazepine
hydrogenosomal
Lyman-alpha forest
halogen stove
LINER
atmosphere
cosmo-
diazocine
gravitational redshift
octadecyl
pentadecyl
microwave
ultraviolet spectrum
benzene nucleus
nebula
benzene ring