# University Physics III: Optics & Modern Physics

- By: OpenStax
- Source: [LibreTexts](https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_III_-_Optics_and_Modern_Physics_(OpenStax))
- Licence: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/)
- Read at LibreTexts: https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_III_-_Optics_and_Modern_Physics_(OpenStax)
- PDF: https://downloads.libretexts.org/api/v1/download/phys-4484/pdf

University Physics is designed for the two- or three-semester calculus-based physics course. This volume explores optics and modern physics, beginning with how light behaves through reflection, refraction, interference, and diffraction. It then moves into relativity and quantum mechanics, introducing photons, matter waves, and atomic structure. The text also covers condensed matter, nuclear physics, and cosmology, linking theory to technologies like lasers, semiconductors, and medical imaging.