A pân junction is a boundary or interface between two types of semiconductor materials, p-type and n-type, inside a single crystal of semiconductor. The p side contains an excess of holes, while the n side contains an excess of electrons in the outer shells of the electrically neutral atoms there. This allows electrical current to pass through the junction only in one direction. The p-n junction is created by doping, for example by ion implantation, diffusion of dopants, or by epitaxy ...
ITER is an international collaboration to build the first fusion science experiment capable of producing a self-sustaining fusion reaction, as a way of generating a clean, safe, and sustainable power.
The iTaB is a small plate, typically [but not exclusively] engraved with the runner's Name and Finish Time, which fits neatly in to a recess on the back of the Finisher Medal; the addition of the recess is a very simple modification for any manufacturer to add to your medal design.