Code Number: 1A20.10

Demo Title: Gaussian Probability Curve - Bell Curve - Galton Board

Condition: Excellent

Principle: Probabilities

Area of Study: Mechanics

Equipment: 

Acrylic Peg Unit with Bottom Catch Bin Array, Styrofoam Glitter Beads, Pour Unit, and Unit to Empty the Catch Bin.

Procedure: 

Set the Gaussian probability curve demonstrator on the table and place the pouring unit into position on the top.  Pour in the small square container of beads at any rate that is desired.  This will be enough beads to make a good probability curve.

Picture three shows the unit needed to pour the beads out of the catch bin.  Take the peg unit off of the base and replace it with the pour unit.  Quickly upend the unit into the plastic container with some shaking until all the beads have been removed.

References:

• J. P. Sharpe, "Poisson Distribution: Derivation and a Computer Simulation", TPT, Vol. 60, #5, May 2022, p. 382.
• David Kagan, "A Brief Experiment to Illustrate the Relationship Between Statistics and Measurement", TPT, Vol. 27, #1, Jan. 1989, p. 44.
• Sarah Jacoby, "How To... Survive a Mosh Pit", Popular Science, Vol. 286, #2, Feb. 2014, p. 25.
• "M-042. Bell Curve Generator", DICK and RAE Physics Demo Notebook, 1993.
• David Kutliroff, "101. A Duality: Particle-Like Waves or Wave-Like Particles", 101 Classroom Demonstrations and Experiments for Teaching Physics, p. 221 - 223.
• Michael Stevens, Galton Board Desktop Edition info, undated.