City of Angels is a film that was directed by Brad Silberling[?] in 1998. The film is a recasting of the story in Wim Wenders' film Wings of Desire, but moved to Los Angeles, California. In the film, an angel falls in love with a human and has to decide whether to become mortal to spend human life with her.
... 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 axis starts ...