How the ATLAS Detector works at CERN

Students often ask me how it is possible to detect tiny subatomic particles, most of which live only a tiny fraction of a second before they decay into other particles.  I worked on the CDF experiment at Fermilab back in graduate school, and most of these collider detectors work the same way.  This is a video that has a focus on the ATLAS experiment at CERN, over in Switzerland. ATLAS is similar to CDF, only a whole lot bigger!  Check it out!