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). Read more about the new design at https://www.i2u2.org/elab/cosmic/teacher/detector.jsp
• Availability: Available
• References: REFERENCES: (PIRA 7D10.80)
• Loc codes: FS1
• Videos-1: Animation
• Videos-2: Demonstration video on YouTube