A graphical representation of the effectiveness of a range of electromagnetic wavelengths in producing a given biochemical or physiological response in an organism.
Origin
1930s; earliest use found in Journal of General Physiology.
Definition of action spectrum in US English:
action spectrum
noun
Biology
A graphical representation of the effectiveness of a range of electromagnetic wavelengths in producing a given biochemical or physiological response in an organism.
Origin
1930s; earliest use found in Journal of General Physiology.