Decades: 1560s BC 1550s BC 1540s BC 1530s BC 1520s BC - 1510s BC - 1500s BC 1490s BC 1480s BC 1470s BC 1460s BC
Significant People
... rim of the groove, while the other end of the axis pushes against the lower rim of the groove. While the axis is slipping around inside the groove, the friction between the ...