Glenn Quinn (May 28, 1970 - December 3, 2002) from Dublin, Ireland was a successful actor in television and film. As well as having a role as a major character in the television series Angel, he also had a recurring role as Mark in the comedy Roseanne. He died in December 2002 at the age of 32 of drug abuse.
... 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 axis starts ...