# Episode 159: Quantum Electrodynamics Part 2

Page: https://stenobird.com/podcast/the-science-of-everything-podcast-533303/episode-159-quantum-electrodynamics-part-2
Text version: https://stenobird.com/podcast/the-science-of-everything-podcast-533303/episode-159-quantum-electrodynamics-part-2.md
Podcast: [The Science of Everything Podcast](https://stenobird.com/podcast/the-science-of-everything-podcast-533303)
Published: 2026-04-01T02:08:03+00:00
Episode link: https://www.thescienceofeverything.net/e/episode-159-quantum-electrodynamics-part-2/
Audio file: https://mcdn.podbean.com/mf/web/wvh6tzd8xsnwqqr8/Quantum_Electrodynamics_Part_2axw12.mp3
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JSON: https://stenobird.com/v1/public/podcasts/the-science-of-everything-podcast-533303/episodes/episode-159-quantum-electrodynamics-part-2
Duration seconds: 2718

## Resource

Continuing from quantum electrodynamics part 1, here we explore the mathematical machinery used to compute interactions between particles, including propagators, Feynman diagrams, cross sections. We then walk through a simple example calculation to illustrate how these tools are applied. I conclude with an introduction to the problem of divergent loop integrals and how these can be resolved using renormalisation. Recommended pre-listening is Episode 158: Quantum Electrodynamics Part 1. If you enjoyed the podcast please consider supporting the show by making a PayPal donation or becoming a Patreon supporter. https://www.patreon.com/jamesfodor https://www.paypal.me/ScienceofEverything

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## Transcript

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