(YouTube link) The tungsten filament of a common incandescent light bulb is w...
https://www.neatorama.com/2011/03/02/light-bulb-filament/
Light Bulb Filament...
Conflict Minerals: Are Smart Phones Fueling the Next Genocide?...
Are you unwittingly fueling genocide by buying the... ...measures.Still, minerals like tantalum, tin, and tungsten are essential for our wired lifestyle. Tantalum... ...batteries. Tin is used to fortify circuit boards. Tungsten helps our iPhones vibrate.But this dependency has...
https://www.neatorama.com/2010/07/18/conflict-minerals-are-smart-phones-fueling-the-next-genocide/
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