We know that in your head the Star Wars universe is horribly real. We know that your time spent in that darkened theatre waiting for The Empire Strikes Back to start gave you a brief, sweaty respite from thinking about that girl who sat next to you in homeroom. It's OK. We were there once, too.
As a gesture of sympathetic good will here is a How Things Work entry for a light saber. Please note: the photo above this post does not represent a REAL Jedi. That is Samuel L. Jackson in a robe and he doesn't really die in Star Wars III. He's alive and well, busy going to Hollywood hotspots and reading scripts his agent sent him. Now go change your shirt and get some air.
How Lightsabers Work [HowStuffWorks]