particle accelerators

Magnets are neverendingly awesome, and superconductors may be the ultimate in cool—they are, after all, literally extremely cold. And not just anyone has the tools to weave superconducting magnets with compressed metallic thread. It's a more essential skill than you might think. Ultra-cold superconducting magnets steer high-speed particles inside colliders, keeping the beams tight and guiding them smoothly through the curves of circular racetracks. But those magnets generally rely on iron, an intrinsically magnetic metal, for key structures. That works beautifully for the particle …
If you're American, chances are you'll be looking up this weekend for a spectacle of physics. But you also can look down from above -- way, way above -- to see the homes of some of the greatest physics experiments on Earth. Brookhaven's Relativistic Heavy Ion Collider (RHIC) is probably one of the most visible particle accelerators from space. Check out this satellite shot from 1982, when construction was underway for RHIC's predecessor, ISABELLE: And this more recent aerial shot, taken in May: RHIC is the first machine in the world capable of colliding heavy ions, which are atoms that…