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717

Centuries: 7th century - 8th century - 9th century

Decades: 660s 670s 680s 690s 700s - 710s - 720s 730s 740s 750s 760s

Years: 712 713 714 715 716 - 717 - 718 719 720 721 722


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Dynabee

... friction between the axis and the groove rims will accelerate or brake the spinning gyroscope, with a maximum effect when the axis starts "rolling" inside the groove. ...

 
 
 
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