π
Buffon's Needle
Estimating π through geometric probability
Drop some needles to estimate π…
Crossing lineNot crossingClick on the canvas to drop a needle at that position
Needle length must not exceed line spacing.
50 px
Length of each dropped needle
80 px
Distance between parallel lines
5,000
Simulation stops after this many needles
×5
5 Needles added per animation frame