Physical hazards konspekt
higher energy state (ultraviolet, visible light,
infrared, microwave, radio waves, low frequency Luminance L cd/m2
RF and static fields)
Luminous flux (Ф)- the total perceived power of Illuminance
light emitted in all directions, measured in lm. It’s Illuminance (E) is the
the value of radiant flux which contains those term given to the
wavelenghts which are detectable by the human quanitify of luminous flux
eye. falling on unit area of a
Luminous intensity (I) is a measure of the surface.
luminous flux over a solid angle (steradian (ω)) E = Ф/A
emitted to a given direction (cd). Unit - lux (lx)
annaabi.ee 
