Abstract
During the past 20 years, the author has made effort to expand the region of time- and space-resolved measurements to contribute to physical chemistry. Although his achievements are yet very far from his initially intended goals, the author describes the background of his ideas to begin new research subjects: 1) how fast liquid phase separation occurs; 2) availability of pulsed x-ray to time-resolved measurements; 3) possibility of sub-molecular spectroscopy for chemical reactions. Problems he faced and suggestions for improvements are also presented.
