strength
intensity
intensity level
radio energy
radiant energy
transmissivity
radiation
acoustic spectrum
sound spectrum
conduction
conductivity
solar energy
backscatter
spectroradiometry
photoconductivity
photoconduction
R
detuning
bandstructure
roentgen
space attenuation
absorptance
coefficient of absorption
dose rate
nuclear spectrum
spectrum
heat transfer
radiant flux
absorption coefficient
sound energy
absorption
radiative transfer
electromagnetic wave
gamma ray
telephony
radio-frequency
radiocautery
radioelectric
actinometry
flux
optical density
transmission density
absorbance
photographic density
flux unit
blue noise
Poynting's theorem
absorbed dose
bandshape
transplanckian