Decades: 1450s BC 1440s BC 1430s BC 1420s BC 1410s BC - 1400s BC - 1390s BC 1380s BC 1370s BC 1360s BC 1350s BC
Significant People
... takes a while until one finds the "rolling" point, but the gyro will also be accelerated to a smaller extent by the slipping friction. The device is covered by US ...