1 янв 1609 г. - Keplers first 2 laws of planetary motion
Описание:
His first law was that every planet´s orbit is an ellipse with the sun at a focus. his second law was that a line joining the sun and a planet sweeps out equal areas at equal times.Добавлено на ленту времени:
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1 янв 1609 г.
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~ 417 г назад