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2 янв 1887 г. - Henrich Hertz experient on radio waves

Описание:

Henrich Hertz in the late 19th century that showed that radio waves were refleted by metalic objects.

Добавлено на ленту времени:

8 сен 2018

Дата:

2 янв 1887 г.
Сейчас
~ 137 г назад