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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
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5 gen 1900 anni - In Baltimore, physicist Dr. Henry A. Rowland of Johns Hopkins University announces that he has discovered that the cause of Earth's magnetic field was its own rotation, based on experiments to produce magnetism by the rotation of a motor

Aggiunto al nastro di tempo:

Data:

5 gen 1900 anni
Adesso
~ 125 years ago