Bubble Chamber Detective
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Bubble Chamber Detective

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Students have the opportunity to analyze real bubble chamber photographs from CERN to understand the motion of charged subatomic particles. The information from the bubble chamber image can be used to infer the trajectory of neutral, unseen particles, which were vital to the discovery of the Omega-Minus baryon in 1964. This lesson integrates well with any unit based on electric and magnetic fields, allowing students to solidify their understanding of conservation laws and charged particles moving in magnetic fields.


  • Lesson Plans: Bubble Chamber Detective
  • Videos: Beyond the Atom: Remodelling Particle Physics (approx. 30 min)
  • Activities: Bubble Chamber Detective (worksheet and solutions)
  • Supplementary Materials: E-mail from researcher Dusan Radojicic describing the Omega-Minus discovery

(Note: all lesson plans and worksheets provided as PDFs and modifiable MS Word documents)

Intended Audience: Senior High (Gr 11-12)
Lesson Topics: Circular Motion, Momentum
Price: Free

This individual lesson plan is part of the Beyond the Atom: Remodelling Particle Physics lesson compilation.