   I was wondering..
  [removed][Edited by - DevLiquidKnight on February 15, 2007 9:49:23 AM]
  Glass (as well as quartz and ceramic) is an excellent isolator, one of the best known actually. Even a very thin glass sheet isolates against hundreds of kV. There are some forms of special industrial glass with incorporated metallic oxide particles (eg. lead glass), that are often used as heat and radiation shielding. Those can be conductors, but only at very high voltages (10,000 volts and up). The best ''glass-conductor'' is low quality or damaged glass, that show small little holes and air bubbles, where high voltages can sneak through.;  I believe that if you put enough potential through it, anything will conduct electricity.  ;  Yeah, but for some isolators, you really need a lot, glass being on of them. And if you go high eneough, the current will likely jump around the isolator, through the air.