Shillul Erinelt

Master radioactive decay through hands-on simulation. Shillul Erinelt puts a complete nuclear physics laboratory on your device — stochastic atom-by-atom decay experiments, multi-member decay chain modeling, and scored radiometric dating cases, all built around real isotopes and real equations. Watch a population of up to 1,500 real atoms decay in the Decay Chamber, then compare your measured half-life against the theoretical curve. Browse a searchable library of 37 isotopes spanning hydrogen-3 to americium-241. Build and solve decay chains — from the full Uranium series to the Mo-99/Tc-99m medical generator — with equilibrium states classified live as secular, transient, or building. At the Dating Bench, work through 12 virtual samples using five radiometric clocks: Radiocarbon, Tritium, Potassium-Argon, Uranium-Lead, and Rubidium-Strontium. A real detector-time budget governs each case, and full error propagation shows every step from measured ratio to final age uncertainty. Every calculation is laid out substitution by substitution. The Clock Calculator lets you freely convert between ratio and age for any supported clock or a custom half-life. Your Lab Journal logs every experiment and dating record, plots measured vs true age on a log-log chart with uncertainty bars, and tracks your accuracy score over time. Designed for students and curious learners at the undergraduate physics and earth-sciences level who want genuine intuition for stochastic decay, chain equilibria, and the practical mechanics and limits of radiometric dating. Shillul Erinelt runs entirely on-device — no account required, no network needed. Adjust atom count, playback speed, and number display style, then start your first experiment.