photoperiod
natural or artificial cycle of light and darkness to which living organisms can be exposed
Note 1 to entry: This entry was numbered 845-06-27 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-936 in CIE S 017:2011.
photoperiod
natural or artificial cycle of light and darkness to which living organisms can be exposed
Note 1 to entry: This entry was numbered 845-06-27 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-936 in CIE S 017:2011.