1 ene 1863 año - Thermionic emissions
Descripción:
Thomas Edison discovers thermionic emissions.Why is this discovery important?:
1. This discovery is the basis of a vacuum tube.
2. In the old days, vacuum tubes were used in all the radio and computers.
3. Before the modern computer came out, it made a computer and the technology could improve.
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fecha:
1 ene 1863 año
Ahora mismo
~ 162 years ago