Advanced Science, Simple Operation Demonstrate the movement of
invisible charged particles with this unique device. Designed in
conjunction with the Contemporary Physics Education Project
(CPEP), the Detector uses the analogy of magnetics. Students
watch and plot the resulting paths of collisions between charged
and neutral particles. The two-layered detector comes with
magnetic marbles, ordinary marbles, iron filings, and an
instruction sheet. Size: 21 x 28cm.