20 ottob 1963 anni - Drummond Matthews and Frederick Vine, 1963 (TOPIC 5)
Descrizione:
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.Aggiunto al nastro di tempo:
Data:
20 ottob 1963 anni
Adesso
~ 62 years ago