How it Works: An Electronic Cigarette (Are They Safe?)
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- Since electronic cigarettes hit the market in 2007, yearly sales have reached $1 billion in the U.S. Although they're popular, it's still unclear how safe they are. Last year, a study from an international group of scientists showed that the toxins in e-cigarette vapor are 9 to 450 times lower than in tobacco smoke. The Food and Drug Administration is still determining its regulatory stance. It's sponsoring more research while sorting out its position.
- Labled Parts: A. LED, B. Sensor, C. Battery, D. Heating Element, E. Nicotine Liquid, F. Mouthpiece.
- http://www.popsci.com/article/technology/how-it-works-electronic-cigarette?dom=PSC&loc=recent&lnk=8&con=how-it-works-an-electronic-cigarette
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