MIKKEL JUUL JENSEN / SCIENCE PHOTO LIBRARY MIKKEL JUUL JENSEN / SCIENCE PHOTO LIBRARY
Smartphone structure. Cutaway computer illustration showing the internal components of a typical smartphone and the metals involved in their manufacture: tantalum - used to store electricity in the battery; copper - used in transistors; gold - used in wire coatings in the circuit boards; tin - used in the solder that fixes components to the circuits board; tungsten - used in the component that makes the phone vibrate.
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