An electronic cigarette (or E-cigarette), personal vaporizer (PV), or electronic nicotine delivery system (ENDS) is an electronic inhaler meant to simulate and substitute for tobacco smoking. It generally utilizes a heating element that vaporizes a liquid solution. Some release nicotine, while some merely release flavored vapor. They are often designed to mimic traditional smoking implements, such as cigarettes or cigars, in their use and/or appearance.
The benefits and risks of electronic cigarette use are, as of 2013, uncertain, but they are likely safer than smoking tobacco. Laws vary widely concerning their use and sale, and are the subject of pending legislation and ongoing debate.
If you did not find the answer to all of your questions...