A vaporizer is a device used to release active compounds from plant material. Most commonly used with cannabis, some say it is healthier because the material is only heated enough to release the active chemicals without burning the inactive organic matter. The essential oils are boiled (vaporized) and released in to the air, but the fiberous material is not burned. This means the worst combustion byproducts are not produced.
basically, u load the chronic, it vaporizes it, takes the thc out of it, u suck in the thc and thats all, no smoke no nothin....when u blow out its just air...first time i ripped one, i was confused because it didnt feel like anything was happening so i kept doing it and i was sooooooo ripped minutes later