The Southern Cheyenne, known in Cheyenne as HeÃ©vÃ¢hetaneo'o meaning Roped People, together with the Southern Arapaho, form the Cheyenne and Arapaho Tribes, in western Oklahoma. Their combined population is 12,130, as of 2008.
In cardiology, the QT interval is a measure of the time between the start of the Q wave and the end of the T wave in the heart's electrical cycle. The QT interval represents electrical depolarization and repolarization of the ventricles. A lengthened QT interval is a marker for the potential of ventricular tachyarrhythmias like torsades de pointes and a risk factor for sudden death.
Hmm, but the second of the two sine functions, though it involves t, but it also involves v as Ï=kv. Means there is a term of wave velocity in the equation of a standing wave. Doesn't that signify the standing wave moves? It does not, obviously, but then what does the v here stand for? What does the v here represent in the equation of a standing wave? If a quantity is related to some velocity it does not mean that the quantity moves. Speed is defined only for travelling waves: Think of the water waves, you see the peaks - wave-fronts moving along. The standing wave does not travel. The nodes are always at the same positions. Ï and k are two parameters, and y, the displacement from equilibrium, depends on both. v is a constant, the speed of any wave of certain kind in the given medium determined by some physical properties of the matter. The wave is a motion, periodic both in space and time.