What's What in Iran Nuclear Deal

As a deadline nears for a deal on Iran’s nuclear program, the talk centers around centrifuges, enriched uranium, and heavy-water reactors. To understand what they are and why they matter, start with a look inside an atomic bomb. Stray bits of atom called neutrons collide with uranium or plutonium in the bomb's core, splitting the atoms apart and releasing enormous amounts of energy. But not just any uranium will do. The radioactive element comes in two main forms, or isotopes:...

© La Voix de l'Amérique - lundi 30 mars 2015