Lightsaber

Star Wars databank 上面说的:

Lightsabers have changed little in the thousands of years of their employ by the Jedi Knights. Those who believe the Jedi order began on the ancient world of Ossus point to the abundance of Adegan crystals in the system as proof. These crystals are ideal for the creation of lightsabers, as they focus the energy released from a saber’s power cell into the tight, blade-like beam. Early lightsabers did not have self-contained power cells, and were instead connected by a conducting cable to a belt-worn power pack.

Once unleashed, the power channels through a positively charged continuous energy lens at the center of the handle. The beam then arcs circumferentially back to a negatively charged high energy flux aperture. A superconductor transfers the power from the flux aperture to the power cell. As a result, a lightsaber only expends power when its blade cuts through something. So efficient is the blade, that it does not radiate heat unless it comes into contact with something.

The blade’s color depends on the nature of the jewel it springs from, and while its length is fixed in the case of a single-jewel lightsaber, lightsabers equipped with multiple crystals can have their length varied by rotating a knob that allows the focusing crystal activator to subtly modify the refraction pattern between the gems.

With the Sith long believed extinct, lightsaber dueling occurred only within the practice chambers of the Jedi Temple. To a Jedi, a lightsaber is not just a weapon. It is a means of concentrating attention and becoming attuned with the Force.

这个描述不甚明了,以至于很多人都在抨击光剑如何如何荒谬。所以有必要仔细说明一下它的原理。

光剑剑刃的外形是由被聚焦的区域性高频震荡塑造的,其能量的表现形式并不是它所发的光,而只是这个“震荡”。这种震荡来源与Jedi武士使用能力时的情况相似,也是被引导的大能所激发的,不过激发的源泉不是Jedi武士自己,而是光剑的手柄,并且通过使用特种水晶以良好的聚焦和固定作用区域。

这种震荡引发聚焦区域内的物质高速运动。这些物质相互碰撞能产生足够的能量使得这些物质的原子或离子被激发到高能级从而发出光芒,使得剑刃呈现出一种光柱状的外表。不过需要指出的是,区域内处于原子或离子状态的物质含量很少,很大一部分物质都是彻底电离的。大能的震荡束缚着大部分的物质,使它们被牢牢的限制在区域内部运动,只有极少量的一定比例的物质能够获得足够高的能量逃逸出这片高能区域。如果剑刃不碰触其他物体,那么震荡区域内的物质只有空气本身(如果在真空中使用光剑,则震荡区域内是及其稀薄的充满于宇宙空间的各种微小粒子)。一旦碰到其他物体,那么该区域内的大能震荡会在极短的时间内把物质气化,而在剑刃区域以外靠近光剑处的物质则会被熔化。毫不夸张的说,几乎一切物质都会被光剑所熔化。

在剑刃的界面上存在折、反射作用。物质运动到这个界面上,会按照其能量发生不同程度的折射和反射,高能物质被反射的程度较高(比如反射枪械发射的粒子束),低能量的物质折射的程度比较高。折射意味着进入光剑的区域,一旦进入,就会被大能的震荡束缚,所以剑刃内的物质不会因为前面所的那种高能物质的逃逸而变得稀薄,因为周围环境中总会有大量的低能物质折射到剑刃内部,补充逃逸掉的那部分物质。光剑砍到物体时也会有阻力,这是一种类似于动量守恒效应的表现。

世界上只有一种东西能挡住光剑,那就是大能。利用大能形成的能量护罩以及其他的光剑都能挡住光剑的剑刃,原因是这种高能的震荡具有互斥性,震荡的模式越接近,互斥作用越明显。这就是为什么Jedi武士用光剑打斗时剑刃不会互相穿透,遇到可产生能量护罩的Droid时无能为力的原因。

通过这些解释可以澄清一些误解。剑刃区域内的物质实际总是很少,所以光剑的惯性是很小的,舞玩光剑的确和舞玩开着的手电筒感觉差不多。但是光剑绝对和手电筒是两回事,不能用光的性质去试图说明光剑是一种荒谬的存在。

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