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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 gen 1897 anni - Experimented with cathode ray tube: an electrical current was passed through the tube which made a stream of particles glow showing there was something there

Aggiunto al nastro di tempo:

Data:

1 gen 1897 anni
Adesso
~ 128 years ago