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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 Jan 1890 Jahr - 1890: Heinrich Hertz built transmitter and receiver, Germany.
Zugefügt zum Band der Zeit:
A brief history: communication events
By
Anh Phan
12 Sep 2022
0
0
172
Datum:
1 Jan 1890 Jahr
Jetzt
~ 135 years ago
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