PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY PHILIPPE PSAILA / SCIENCE PHOTO LIBRARY
Semiconductor manufacture. Technician adding trace elements to a crucible of silicon used to make semiconductor wafer for microchips. Small, precisely controlled amounts of certain elements (such as boron and phosphorous) are needed to give the silicon the right electrical properties. Photographed in a Philips factory, Caen, France.
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