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Calibrating instruments…
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Mass becomes energy — half-lives, binding energy and the power of the nucleus.
The nucleus stores the universe's densest energy. Watch a sample of radioactive atoms decay and measure its half-life off the curve, read binding energy per nucleon to see why iron sits at the peak, compare the penetration of alpha, beta and gamma radiation, and split or fuse nuclei to turn a mass defect into energy through E = mc² — the physics of reactors, stars and carbon dating.
Beyond the open showcase, subscribed schools get the growing library of Nuclei & Radioactivity experiments — searchable, tagged by concept and difficulty, and expanding continuously.