# Quantum & Nuclear

Quantum and nuclear physics describe atoms and particles, where a photon's energy is E = hf and mass converts to energy by E = mc². A radioactive sample loses half of its unstable atoms in each half-life, so one eighth remains after three half-lives. De Broglie wavelengths and nuclear binding energy are other common calculations.

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Category: [Science & Engineering Calculators](https://techolm.com/science-calculators)