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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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29 dez 1885 ano - Eugen Goldstein shows that cathode rays are negative.
Adicionado na linha do tempo:
Timeline For Chemistry Class
By
Joey Smith
18 set 2017
0
0
579
Data:
29 dez 1885 ano
Agora
~ 139 years ago
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