Nuclear Physics — three ways to learn it.

The complete written lesson — protons, neutrons and isotopes, mass defect and binding energy (E = mc²), the three radiations (α, β, γ) and the decay law, half-life and activity, nuclear fission and fusion, and the hazards and everyday uses of radiation.

As you scroll, a live animated panel brings every idea to life: assemble a nucleus and read off its binding energy per nucleon, then watch a sample of radioactive atoms decay away and the activity halve, and halve again, every half-life.

Run the radioactive-decay experiment on a safe, virtual bench: log the count rate against time, plot the decay curve (and its log form), and read the half-life and decay constant straight off your own measurements.