Gaussian Distribution of Radioactive Decays - Physics Demonstrations - Gaussian Distribution of Radioactive Decays | Physics Undergraduate Labs

Follow all institutional radiation safety procedures and regulations. Ensure the radioactive source is properly licensed, stored in a locked container when not in use, and handled only by authorized personnel. Use appropriate shielding and maintain ALARA (As Low As Reasonably Achievable) principles. Students should observe from a safe distance. Always use tongs or forceps to handle sources, never bare hands. Post radiation warning signs during the demonstration.

Purpose

Demonstrates that repeated measurements of radioactive decay counts follow a Gaussian distribution, illustrating that individual quantum events are random but ensemble behavior is statistically predictable. Shows the Poisson-to-Gaussian transition and the $\sigma = \sqrt{N}$ relationship.

Safety Warnings

Danger: Radiation Safety Protocol

Purpose