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1 янв 1540 г. - Screws being used - Screws became used for clocks, enabling much smaller designs that kept time much better than first models.
Добавлено на ленту времени:
21 ноя 2019
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Maths - History of time
Дата:
1 янв 1540 г.
Сейчас
~ 484 г назад