derek.irish ← Back to index
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 →