#73 A group of Japanese scientist under the leadership of Dr. Yoshio Nishina is working on the continuous measurement of cosmic ray intensity, measuring the mass of the meson, one of the elementary particles of atomic nucleus. Assistant checks over the Geiger-Muller counter at laboratory in Tokyo, 1949.

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#73 A group of Japanese scientist under the leadership of Dr. Yoshio Nishina is working on the continuous measurement of cosmic ray intensity, measuring the mass of the meson, one of the elementary particles of atomic nucleus. Assistant checks over the Geiger-Muller counter at laboratory in Tokyo, 1949.

100 Stunning Photos of Postwar Tokyo that Show Everyday Life (1945-1949)

#73 A group of Japanese scientist under the leadership of Dr. Yoshio Nishina is working on the continuous measurement of cosmic ray intensity, measuring the mass of the meson, one of the elementary particles of atomic nucleus. Assistant checks over the Geiger-Muller counter at laboratory in Tokyo, 1949.

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