How does an e-cigarette works?

We all know how our traditional tobacco cigarette works, we light the cigarette, the tobacco burns and release smoke, which is inhaled and exhaled by the smoker, causing smoke, smell, ash and many other problems that get revealed in the course of time. However, with technology bringing a healthier alternative to tobacco cigarette that does not depend upon this combustion process, it becomes easy to smoke without lighting an open flame. Need to know how? The products offered by the top e cigarette brand heats the liquid nicotine present in the cartridge, convert it in to vapor and these vapors are inhaled by the smoker that when absorbed by his body make him exhale the vapor that immediately disappear in air.
 
 
Different companies have different models available and depending upon them, user can either inhale directly from the cartridge to begin the vaporization process or can go via manual switch that when pressed trigger the vapor process. However, the basic to advance model of e-cig contains three parts that chiefly include -:
 
1) a rechargeable lithium battery
2) a vaporization chamber
3) a cartridge
 
As the name suggests, the lithium battery is the power source for the e-cig that can charged using the charger often look like the one we use for our mobile phones. The battery is supported in the vaporization chamber that hosts the battery and the atomizer. The cartridge is also attached to the same vaporization chamber and then the user activates the e-cig. There is different colored tip that acts as the mouthpiece to inhale the vapor produced after the e-cig is triggered. 
 
The inhalation and exhalation procedure for electronic cigarette is same as that of traditional tobacco cigarette. When the user inhale the atomizer’s functioning start, which is to heat the cartridge filled with liquid nicotine. This heating converts liquid nicotine in to vapor that user inhale. In keeping with the view of the e-cig manufacturing companies these vapors does not contain any harmful chemicals and provide only the healthier satisfaction to the smoking urge.
 
If you need more details then here's a resource for you.