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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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24 giug 1897 anni - Karl Ferdinand Braun construye el primer tubo catodico
Aggiunto al nastro di tempo:
jorge
By
Jorge González Cordero
17 nov 2017
0
0
342
Data:
24 giug 1897 anni
Adesso
~ 128 years ago
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