The Musical Telegraph used steel reeds oscillated by electromagnets and transmitted over a telephone line. Over the years, as his fortunes rose and fell, his political direction oscillated wildly. Before, Sparta had oscillated between the extremes of democracy and tyranny&colon; anarchy and dictatorship. The town's population oscillated until World War II, when it began growing steadily. Historically, Morocco has oscillated between periods of religious tolerance and intolerance. Relations between Sattar Khan and the ARF oscillated between amity and resentment. However, Irma oscillated in intensity over the next few days due to drier air. The Stelists oscillated between maverick independence and electoral alliances with more prestigious nationalist parties. The Chamber of Deputies oscillated between repressive "ultra-royalist" phases and progressive "liberal" phases. When the slit is oscillated at the correct speed, a complete image is viewed. The ball oscillated backward and forward over the ground without any material result. But, in his speculative moments, Newton oscillated between accepting and rejecting direct remote action. The mounted police officers oscillated on a double shift. From the Peace of Westphalia of 1648 to 1803, their number oscillated at around fifty. However, this actually oscillated between 35 and 38 knots, depending on the vessel.