{"id":233729,"date":"2026-03-20T15:05:55","date_gmt":"2026-03-20T20:05:55","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/03\/introduction-to-quantum-electrodynamics-qed"},"modified":"2026-03-20T15:05:55","modified_gmt":"2026-03-20T20:05:55","slug":"introduction-to-quantum-electrodynamics-qed","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/03\/introduction-to-quantum-electrodynamics-qed","title":{"rendered":"Introduction to Quantum Electrodynamics (QED)"},"content":{"rendered":"<p><\/p>\n<p><iframe style=\"display: block; margin: 0 auto; width: 100%; aspect-ratio: 4\/3; object-fit: contain;\" src=\"https:\/\/www.youtube.com\/embed\/9OU8fMbpiFM?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope;\n   picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<p>It\u2019s now time to dig into quantum field theories with considerably more rigor than earlier in the series. First up is quantum electrodynamics, or QED. This was the first successful QFT, combining quantum mechanics and special relativity. Let\u2019s learn what this model is all about, and how to do math with Feynman diagrams.<\/p>\n<p>Script by andrew mattson, physics phd student at johns hopkins university.<\/p>\n<p>Watch the whole Modern Physics playlist: <a href=\"http:\/\/bit.ly\/ProfDavePhysics2\">http:\/\/bit.ly\/ProfDavePhysics2<\/a><\/p>\n<p>Classical Physics Tutorials: <a href=\"http:\/\/bit.ly\/ProfDavePhysics1\">http:\/\/bit.ly\/ProfDavePhysics1<\/a><br \/> Mathematics Tutorials: <a href=\"http:\/\/bit.ly\/ProfDaveMaths\">http:\/\/bit.ly\/ProfDaveMaths<\/a>.<br \/> General Chemistry Tutorials: <a href=\"http:\/\/bit.ly\/ProfDaveGenChem\">http:\/\/bit.ly\/ProfDaveGenChem<\/a>.<br \/> Organic Chemistry Tutorials: <a href=\"http:\/\/bit.ly\/ProfDaveOrgChem\">http:\/\/bit.ly\/ProfDaveOrgChem<\/a>.<br \/> Biochemistry Tutorials: <a href=\"http:\/\/bit.ly\/ProfDaveBiochem\">http:\/\/bit.ly\/ProfDaveBiochem<\/a>.<br \/> Biology Tutorials: <a href=\"http:\/\/bit.ly\/ProfDaveBio\">http:\/\/bit.ly\/ProfDaveBio<\/a>.<\/p>\n<p>EMAIL\u25ba <a href=\"mailto:ProfessorDaveExplains@gmail.com.\">ProfessorDaveExplains@gmail.com.<\/a><br \/> PATREON\u25ba \/ professordaveexplains.<\/p>\n<p>Check out \\.<\/p>\n<div class=\"more-link-wrapper\"> <a class=\"more-link\" href=\"https:\/\/lifeboat.com\/blog\/2026\/03\/introduction-to-quantum-electrodynamics-qed\">Continue reading \u201cIntroduction to Quantum Electrodynamics (QED)\u201d | &gt;<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>It\u2019s now time to dig into quantum field theories with considerably more rigor than earlier in the series. First up is quantum electrodynamics, or QED. This was the first successful QFT, combining quantum mechanics and special relativity. Let\u2019s learn what this model is all about, and how to do math with Feynman diagrams. Script by [\u2026]<\/p>\n","protected":false},"author":661,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,19,2229,1617],"tags":[],"class_list":["post-233729","post","type-post","status-publish","format-standard","hentry","category-biological","category-chemistry","category-mathematics","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/233729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/661"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=233729"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/233729\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=233729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=233729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=233729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}