Light Bulb Filament...
(YouTube link) The tungsten filament of a common incandescent light bulb is w...
https://www.neatorama.com/2011/03/02/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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