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E CIGRATTE

An electronic cigarette, e-cigarette or vaporize cigarette, is a battery-powereddevice that provides inhaled doses of nicotine or non-nicotine vaporized solution. It is an alternative to smoked tobacco products, such as cigarettes, cigars, or pipes. In addition to purported nicotine delivery,^[1] this vapor also provides a flavor and physical sensation similar to that of inhaled tobacco smoke, while no smoke orcombustion is actually involved in its operation.

An electronic cigarette takes the form of some manner of elongated tube, though many are designed to resemble the outward appearance of real smoking products, like cigarettes, cigars, and pipes. Another common design is the "pen-style", so named for its visual resemblance to a ballpoint pen. Most electronic cigarettes are reusable devices with replaceable and refillable parts. A number of disposable electronic cigarettes have also been developed.

In automatic models, when a user inhales through the device, air flow is detected by a sensor, which activates a heating element thatvaporizes a flavored liquid solution stored in the mouthpiece, which may contain nicotine.^[3] On manual models, the user must depress a button to activate the heating element to produce vapor which is then inhaled by the user. On most models an LED on the opposite end of the device is also activated during inhalation, which serves as an indicator of use. Several LED colors are available from various manufacturers.