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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1940 año - В.К. Зворыкин построил СЭМ с эффективным детектором электронов и медленным сканированием
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Электронный микроскоп. История
By
Вера Черепанова
15 nov 2017
0
0
606
fecha:
1 ene 1940 año
Ahora mismo
~ 85 years ago
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