<p align="right">Last Update: <font color="#4f81bd">November, 25, 2024</font></p>
## BIG IDEA
Radiation consists of quanta with specific energies determined by a new fundamental constant, thereafter called [[Planck’s constant]].
### Key Experiments
- **Blackbody Radiation**: Explained by Max Planck, who introduced the idea of energy quanta to resolve the ultraviolet catastrophe.
- **Atomic Spectra**: Niels Bohr's model of the hydrogen atom demonstrated that electrons orbit the nucleus in quantized energy levels, explaining spectral lines.
### Related Topics
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[[Home|Home]] | [[Quantum mechanics]] | [[Notes Vault/Physics Notes Vault/Quantity of Motion/Quantum Mechanics/Blackbody Radiation|Blackbody Radiation]] | [[Photoelectric Effect]] | [[Atomic Theory]]