Yuasa operating equipment.
https://files.mastodon.online/media_attachments/files/111/616/331/680/141/224/original/9bdb594a20b9976f.png
...As a citizen of an enemy country, Yuasa had to leave France when the Allies landed at Normandy in 1944.
She went to Berlin, where she built a double-focusing beta-ray spectrometer.
Yuasa got back to Japan, via Trans-Siberian Railway with her spectrometer. It was just before the atomic bombs fell...
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