Grandma Moses, whose real name was Anna Mary Robertson, was a renowned American folk artist. She was born on September 7, 1860, and died on December 13, 1961, at the age of 101. She began painting in 1938 after abandoning a career in embroidery because of arthritis.
... 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 axis and the groove ...