joe smith | Introduction to Waveguides using the LiteVNA, Part5, EPR Spectroscopy @joesmith-je3tq | Uploaded July 2024 | Updated October 2024, 5 days ago.
This video describes and demonstrates a homemade electron paramagnetic resonance spectrometer based on the LiteVNA. We attempt to touch on the subject of quantum mechanics.

EEVBLOG thread, Experimenting with waveguides using the LiteVNA
eevblog.com/forum/rf-microwave/experimenting-with-waveguides-using-the-litevna

The Zeeman Effect:
https://courses.physics.ucsd.edu/2016/Spring/physics4e/zeeman.pdf

EPR Spectroscopy: The Basics
https://www.healthcare.uiowa.edu/corefacilities/esr/publications/1999/pdf/BC-1999-EPR-Basics-GRB.pdf

Orbitals: What they are and how they work?
https://www.cuyamaca.edu/student-support/tutoring-center/files/student-resources/Electron%20orbitals_Quantum%20Numbers.pdf

This is not what an atom really looks like:
bigthink.com/hard-science/atom-appearance

Practical Aspects
https://webhome.auburn.edu/~duinedu/epr/2_pracaspects.pdf