radio energy
strength
intensity level
intensity
gamma ray
electromagnetic wave
emission spectrum
absorption spectrum
backscatter
radio-frequency
radiation
radiant energy
radiocautery
solar energy
gamma radiation
actinometry
opacity
light unit
spectroradiometry
extinction
photo-
black-body radiation
blackbody radiation
bandshape
transmissivity
infrared
infrared light
infrared emission
monoenergetic
infrared radiation
heat transfer
fluorescence
nuclear spectrum
transparency
transparence
photoelectroactivity
upscattering
photoconduction
photoconductivity
electron spin resonance
glowing
photovoltaic effect
radioactivity
electronic smog
radiance
electron paramagnetic resonance
ultraviolet spectrum
fluoresce
ESR
glow