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6 Jan 1119 Jahr - The use of the Magnetic Compass.

Beschreibung:

These were the first reports of the Song Dynasty using a magnetic compass. The compass is different because it uses a smaller needle which is attached to a fixed stem. This is important when the Song travel in the Ocean.

Zugefügt zum Band der Zeit:

Song Dynasty

ByAidan Steigelmann
29 Jan 2018

Datum:

6 Jan 1119 Jahr
Jetzt
~ 905 years ago
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