Do I need to install anything?

No. It runs in any modern browser, free, with no account required.

For Hobbyists & Makers · Radioactive Decay

Radioactive Decay for a gas diffusion

Built for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker. Simulate a gas diffusion live below — adjust the inputs and watch it respond, right in your browser.

Radioactive DecayLive

exponential decay · half-life

Controls

Speed1×

Every half-life, half the remaining atoms decay. After n half-lives, only (1/2)ⁿ is left — the basis of carbon dating and nuclear physics.

Presets

Half-life

▶ Run in Python

Data Inspector

Half-life4.0

Time0.0

Remaining100.0%

Half-lives0.00

Governing equation

N (t) = N_{0} e^{- λ t}, λ = \frac{ln 2}{4.0} = 0.173

Reading this result: Each half-life removes half of whatever remains, so the curve falls steeply at first and then flattens into a long tail.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

Also for:Students Researchers Educators Engineers K-12 Students First Responders General version →

More with Radioactive Decay

Radioactive Decay for a reaction rate Radioactive Decay for a titration Radioactive Decay for a gas law Radioactive Decay for a pH balance Radioactive Decay for an equilibrium Radioactive Decay for a battery cell Radioactive Decay for a combustion Radioactive Decay for a crystallization

Frequently asked questions

Is this good for hobbyists & makers?: Yes — this version of "Radioactive Decay for a gas diffusion" is framed for hobbyists & makers exploring it for fun. Play with real physics and math, no license and no setup — just open and tinker.
Do I need to install anything?: No. It runs in any modern browser, free, with no account required.