Particle Accelerator  The bowl is rocked from side to side to
make the ball spiral around inside. With the right rhythm, the
ball will move faster and faster. With each well-timed rock of
the bowl, a small amount of energy is added to the ball. As the
ball becomes more and more energetic, it climbs higher up the
side of the bowl. A similar technique is used in real particle
accelerators, devices that speed up tiny bits of matter with
repeated small boosts of energy. By accelerating and then
colliding particles, physicists discover and study subatomic
particles and the forces that govern them.