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jan 12, 1835 - the first electric device

Description:

The first electronic device ever invented is the relay, a remote switch controlled by electricity that was invented in 1835 by Joseph Henry, an American scientist, although it is also claimed that the English inventor Edward Davy "certainly invented the electric relay" in his electric telegraph c.1835.

Added to timeline:

5 months ago
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Date:

jan 12, 1835
Now
~ 183 years ago
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