A set of tools in a media composition system for stereoscopic video provides visualizations of the perceived depth field in video clips, including depth maps, depth histograms, time-based depth histogram ribbons and curves displayed in association with a media timeline, and multi-panel displays including views of clips temporally adjacent to a clip being edited. The base is enclosed in a plastic material through insert molding to have a slim body that enables a reduced overall thickness of the cellular phone. The electrodes are held at respective electric potentials to drift electrons released during ionization of the ionizable gas by external radiation towards one of the electrodes for detection. At least a portion of the spin torque oscillator is provided between the first magnetic pole and the second magnetic pole.