radiant flux
radiant energy
photosensitivity
radiosensitivity
light wave
strength
intensity
intensity level
actinometry
radioelectric
radiometry
pulse
luminous flux
reflectance
reflection factor
undulation
reflectivity
coefficient of reflection
absorptance
transmission
speed of light
luminous energy
coefficient of absorption
absorption coefficient
transmittance
cd
candle
candela
absorption
radioelectricity
flash
standard candle
solar energy
radio energy
spectroradiometry
nuclear magnetic pulse
electromagnetic spectrum
radiation
ferrimagnetically
irradiance
nonparticulate radiation
lumen-hour
electromagnetic radiation
radiant
nanocandela
electromagnetic wave
opacity
field strength unit
light unit
photo-