How do Electronic Cigarettes Work?

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While smoking, an operating indicator light at the front tip lights up. This red colored LED also likens the appearance of an e-cigarette to that of a conventional tobacco cigarette. The mist of vapors appears like smoke, and thus, manufacturers have tried their best to make them appear like regular cigarettes and simulate the act of smoking. Since these don't contain tobacco, the risk of passive smoking and inhalation of carcinogens is not present. One wouldn't have to worry about the nasty smell as well as the ashes. Some of the models are automated while some need to be operated manually.

[seozombi]

While Electronic cigarettes look, feel and taste much like traditional cigarettes, they function very differently. You see, electronic cigarettes do not actually burn any tobacco, but rather, when you inhale from an e-cigarette, you activate a "flow censor" which releases a water vapor containing nicotine, propylene glycol, and a scent that simulates the flavor of tobacco.