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An index of experiments

ThePlayground

A small collection of interactive experiments and demos. Each one started as a question, became a prompt, and ended up here.

Experiments
No. 01

The Interactive Solar System

An explorable model of the planets. Drift through the orbits and pull up each world at your own pace.

AstronomyVisualization
Open
No. 02

The Interactive Periodic Table

Every element, arranged the way Mendeleev imagined it, with the details for each one a click away.

ChemistryVisualization
Open
No. 03

The Cadence

A cloud-native personal finance app and architecture study. The discipline of debt, savings, and investing, modeled as steady rhythm in code.

Cloud-NativeFinance
Open
No. 04

The Electromagnetic Spectrum

One slider across seventeen orders of magnitude, from radio to gamma, with light blooming into color in the visible band.

PhysicsLight
Open
No. 05

The Power Zones

Enter an FTP and weight to see all seven cycling training zones in watts and watts per kilo.

CyclingFitness
Open
No. 06

The Compound Growth

Watch a starting balance and steady contributions grow, split into what you put in and what compounding added.

FinanceSaving
Open
No. 07

The Options Payoff

Stack calls, puts, and stock and read the profit and loss diagram at expiration.

FinanceOptions
Open
No. 08

The Yield Curve

Drag the points to reshape the curve and see what normal, flat, and inverted shapes tend to signal.

FinanceRates
Open
No. 09

The Debt Payoff

Compare the snowball and avalanche methods to find your debt-free date and total interest.

FinancePlanning
Open
No. 10

The Mandelbrot Set

Pan and zoom into infinite detail at the boundary where one simple rule turns to chaos.

MathFractals
Open
No. 11

The Fourier Series

Stack rotating circles, the epicycles, to build a square, sawtooth, or triangle wave.

MathSignals
Open
No. 12

The Logistic Map

Turn one dial and watch a steady answer split, double, and dissolve into chaos.

MathChaos
Open
No. 13

The Galton Board

Drop beads through a field of pegs and watch pure chance pile into a bell curve.

MathProbability
Open