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31 дек 1949 г. - Charles Townes, Alexander Prokhorov, & Nikolai Basov - First Maser
Добавлено на ленту времени:
History of the Laser
By
Chloe Wells
11 окт 2017
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503
Дата:
31 дек 1949 г.
Сейчас
~ 75 г назад
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