Abstract
In the late 1960s, I identified an aspect of the kinetics of chlorophyll fluorescence in algal cells that I was unable to explain in terms of photochemical quenching. I proposed a novel regulatory mechanism for the distribution of light energy to photosystems I and II, which is now known by the term of "state transitions." I also examined the "cation-dependent redistribution of light energy" to photosystems I and II and the "energy-dependent quenching" of chlorophyll fluorescence. At that time, financial constraints prevented me from measuring the emission and action spectra of chlorophyll fluorescence at liquid-nitrogen temperature and the light quality-dependent changes in the yield of chlorophyll fluorescence at room temperature. The financial problems were solved by constructing several pieces of electronic equipment using skills obtained by repairing radios when I was a high-school and college student.
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