Vaporizers use electricity in order to generate a significant amount of heat. This heat is transferred to dry herb or some form of concentrate. Once this happens, vapor is produced as the material is literally vaporized in the heating chamber. When it comes to desktop vaporizers, focus is given more to the vaporizing power than it is to portability or concealability. Generally, these remain more or less stationary. This is not always the case, but they are not designed to be extremely mobile.