My World Tools

Musical Note Frequencies

Tap a note to hear it and see its frequency.

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Sequence ConvergenceWatch classic sequences like (1+1/n)ⁿ converge toward their famous limits.
Poisson DistributionAdjust the average event rate and see how the Poisson distribution shape changes.
Measurement Error AnalysisEnter a set of measurements and the true value to see absolute, relative, and standard errors.
Fractal ViewerExplore the Mandelbrot and Julia sets — click anywhere to zoom into the pattern.