Additional Info

• ID Code: P4-04
• Purpose: Demonstrate the existence of cosmic rays.
• Description: Two scintillator paddles with phototubes are used to detect cosmic ray muons. A coincidence unit is used to obtain cosmic ray coincidences between the two paddles when they are positioned along a vertical line. Set one detector on a chair and hold the second detector above it to see coincidences; move the upper paddle horizontally to demonstrate that the muons are coming straight down from the upper atmosphere. The bottom paddle can be placed on a chair, a student lies on that detector, and the second detector is held over the student to demonstrate that cosmic rays are passing through the student (or other victim).
• Availability: Available
• References: REFERENCES: (PIRA 7D10.80)
• Loc codes: FS1
• Videos-1: Animation
• Videos-2: Demonstration video on YouTube