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19 lugl 1874 anni - Освещение ж/д путей

Descrizione:

П. Н. Яблочков устроил на паровозе первую в мире установку для освещения железнодорожного пути при помощи электрического прожектора

Aggiunto al nastro di tempo:

Профессия электрик

ByАлина Кутнякова

25 nov 2018

0

0

553

Data:

19 lugl 1874 anni

Adesso

~ 151 years ago

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