Galton board bean machine
Description
The Bean Machine, Also Known As The Quincunx Or Galton Box, Is A Device Invented By Sir Francis Galton To Demonstrate The Central Limit Theorem, In Particular That The Normal Distribution Is Approximate To The Binomial Distribution. The Machine Consists Of A Vertical Board With Interleaved Rows Of Pins. Balls Are Dropped From The Top, And Bounce Left And Right As They Hit The Pins. Eventually, They Are Collected Into One-Ball-Wide Bins At The Bottom. The Height Of Ball Columns In The Bins Approximates A Bell Curve. I Used Soy Beans For This Particular Prototype. You Can Change The Variables In The Openscad File To Adapt The Design For Other Objects. I Printed The Different Parts On An Ultimaker 2 And Glued The Parts Together.
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