Stephen VI, pope (885-891), succeeded Pope Adrian III, and was in turn succeeded by Pope Formosus. In his dealings with Constantinople in the matter of Photius, as also in his relations with the young Slavonic church, he pursued the policy of Pope Nicholas I.
There is a problem in numbering the Popes Stephen -- see Pope Stephen II for the explanation.
from the 9th edition (1887) of an unnamed encyclopedia.
... is slipping around inside the groove, the friction between the axis and the groove rims will accelerate or brake the spinning gyroscope, with a maximum effect when the ...