WHAT IS ELECTRONIC CIGARETTE (E-CIG)
An e-cigarette (or e-cig) is an alternative to cigarette, providing small or zero amounts of chemical nicotine with each inhalation. E-cigarettes generally use a rechargeable battery as a power source.
When the user inhales through the device, the air flow is detected by a sensor. A microprocessor then activates a piezoelectric nebulizer (popularized by the industry as an atomizer), which injects tiny droplets of the liquid into the flowing air and vaporizes the liquid. This produces a vapor mist which is inhaled by the user. The addition of propylene glycol to the liquid makes the mist better resemble normal cigarette smoke. The microprocessor also activates an orange LED at the tip to simulate real smoking.