| irradiance, when used in photochemistry, phototherapy and photobiology Note 1 to entry: When reporting the dose rate, the spectral distribution of the optical radiation shall be specified. Note 2 to entry: The notion of rate applies similarly to actinic dose and effective dose. Note 3 to entry: The dose rate is expressed in watt per square metre (W·m−2). Note 4 to entry: This entry was numbered 845-06-25 in IEC 60050-845:1987.
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