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Lightsaber traditional Jedi weapon, used much like a sword. It consists of cylindrical handle in which sophisticated circuits channel a beam of light through a series of jewels, which modulate the blade´s size and amplitude. It was considered one of the Jedi students´ final challenges to construct their own lightsaber. Many Jedi Masters stressed the lightsaber as a true test of their apprentice´s progress, for the the lightsaber´s power is great. A true Jedi Knight only uses the lightsaber for defense, never attack, and there is a great deal of patience involved with learning this. Some Masters also use the lightsaber as a way to get their apprentices to focus their minds on the Force, for it takes a great deal of skill to wield one. The mechanics of a lightsaber are simple, although the application of them takes great skill and concentration. A novice Jedi Knight should be able to create his first lightsaber in about a month. A trained Jedi Master can, in a hurry, could construct one in a few days. Note that the Star Wars Journal: The Fight for Justice indicates that a Jedi is given his lightsaber on his first day of training. Every lightsaber contained these basic components: a power cell, a handgrip, an activation plate or stud, a safety switch, a blade-length adjuster, an emitter matrix, and recharge socket, a lens assembly, at least one focusing crystal, a power conduit, and an optional belt ring. When activated, internal power cells create photoelectric energy which is focused through one, two, or three multi-facted crystals. In the lightsabers of the Jedi Knights, these crystals were found in nature, a task which reqruied the Jedi to focus their concentration on selecting a stone which would focus the energy and not explode. The Sith, however, used synthetic crystals formed in incredibly hot ovens, using their emotional control of the Force to assist in the formation of the stone. The energy is formed into a tight, parallel beam of coherent packets. These packets are emitted through a positively-charges, continuous energy lens which projects the packets away from the lightsaber. The packets are almost immediately attracted back to the lightsaber by a negatively-charged, high-energy flux aperature, and then continually recycled to create the glowing blade. The packets are recycled by a superconductor back into the power cell for re-energizing. The entire process is completely contained. No energy is lost, since the light in the blade is recaptured. No heat is generated, either. The only energy loss occurs when the blade strikes an object. When Obi-Wan Kenobi began teaching Luke Skywalker how to use his father´s lightsaber, Kenobi began by showing Luke the basic body positions used by the Jedi. There were seven attack positions, and four defensive positions. Each attack or defense position flowed into the next, creating a smooth, continual motion. To perform them all in sequence takes concentration, skill, and stamina.