Encyclopedia > 5th millennium BC

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5th millennium BC

(6th millennium BC - 5th millennium BC - 4th millennium BC or 40th century BC - other millennia)


Events:

Significant persons:

Inventions, Discoveries, Introductions



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Dynabee

... is that the axis of a spinning gyroscope will resist a force applied to it and will start rotating perpendicular to the force applied. This is why spinning gyro tops ...

 
 
 
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