Advanced Quantum Mechanics : F. J. Dyson;Michael J. Moravcsik : Free Download, Borrow, and Streaming : Internet Archive
![Symmetry | Free Full-Text | Semi-Analytical Approach in BiER4BP for Exploring the Stable Positioning of the Elements of a Dyson Sphere Symmetry | Free Full-Text | Semi-Analytical Approach in BiER4BP for Exploring the Stable Positioning of the Elements of a Dyson Sphere](https://www.mdpi.com/symmetry/symmetry-15-00326/article_deploy/html/images/symmetry-15-00326-g001.png)
Symmetry | Free Full-Text | Semi-Analytical Approach in BiER4BP for Exploring the Stable Positioning of the Elements of a Dyson Sphere
![Robert McNees (@mcnees everywhere else) on Twitter: "Freeman Dyson submitted a lovely little two-page paper to Physical Review #OTD in 1951, demonstrating that perturbation theory in quantum electrodynamics produces a divergent series. Robert McNees (@mcnees everywhere else) on Twitter: "Freeman Dyson submitted a lovely little two-page paper to Physical Review #OTD in 1951, demonstrating that perturbation theory in quantum electrodynamics produces a divergent series.](https://pbs.twimg.com/media/DrQ0tC3WsAArO-U.jpg:large)