$100 Pocket Muon Detector: Students build handheld CosmicWatch; sparks citizen-science network
CosmicWatch is a compact and affordable particle detector that can be used for research and education purposes. Developed by physicist Spencer Axani, it costs about $100 and can be assembled easily. The portable device detects muons, allowing students to investigate cosmic-ray interactions and environmental changes. Researchers have successfully utilized it in high-altitude experiments and various scientific studies.