20 окт 1963 г. - Drummond Matthews and Frederick Vine, 1963 (TOPIC 5)
Описание:
They were studying Earth's magnetic field and evidence came up that the poles have reversed many times. To add on, magnetic surveys nearby the mid-ocean ridges showed that the magnetic field could effect sea-floor spreading.Добавлено на ленту времени:
Дата:
20 окт 1963 г.
Сейчас
~ 62 г назад