Debate continues over e-cigarettes

(Jackson County Floridan) ... the main body of the device is actually a 3.5-volt rechargeable battery encased in a cylinder about the size of a cigarette. A short metal atomizer, about the size of a filter, is screwed into it. A mostly hollow cartridge, of the same shape but slighter bigger than the atomizer, contains an amount of liquid nicotine, propylene glycol (a substance used in food coloring), and flavoring. Continued

Story via http://www.tobacco-facts.net/. Image: Nicotine (Wikipedia)