What is an electronic cigarette?

What is an electronic cigarette? It consists of an battery part, an atomizer and a cartridge which is filled with liquid.

When you inhale an electronic cigarette, air goes though the atomizer, the battery part automatically heats the resisters of the atomizer, which vapors the liquid that is actually a kind of nicotine replacement.

So you inhale the vapor when you smoke an electronic cigarette.

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