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<url><loc>https://elliotmcguckenphysics.com/2026/04/15/dark-matter-as-geometric-mis-accounting-how-the-mcgucken-principle-of-the-fourth-expanding-dimension-dx4-dt-ic-generates-flat-rotation-curves-the-tully-fisher-relation-and-enhanced-gr/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: x4=ict, ergo dx4/dt=ic</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-15T21:37:54+00:00</news:publication_date><news:title>Dark Matter as Geometric Mis-Accounting: How the McGucken Principle of the Fourth Expanding Dimension (dx4/dt = ic) Generates Flat Rotation Curves, the Tully-Fisher Relation, and Enhanced Gravitational Lensing Without Dark Matter Particles</news:title></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/15/the-mcgucken-principle-of-the-fourth-expanding-dimension-dx4-dt-ic-as-a-geometric-resolution-of-the-horizon-problem-the-flatness-problem-and-the-homogeneity-of-the-cosmic-microwave-bac/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: x4=ict, ergo dx4/dt=ic</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-15T21:03:20+00:00</news:publication_date><news:title>The McGucken Principle of the Fourth Expanding Dimension (dx4/dt = ic) as a Geometric Resolution of the Horizon Problem, the Flatness Problem, and the Homogeneity of the Cosmic Microwave Background — Without Inflation</news:title><news:keywords>physics, science, philosophy, quantum-mechanics, consciousness</news:keywords></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/15/a-derivation-of-feynmans-path-integral-from-the-mcgucken-principle-of-the-fourth-expanding-dimension-dx4-dt-ic/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: x4=ict, ergo dx4/dt=ic</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-15T20:27:57+00:00</news:publication_date><news:title>A Derivation of Feynman&#8217;s Path Integral from the McGucken Principle of the Fourth Expanding Dimension dx4/dt = ic</news:title></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/15/the-mcgucken-principle-and-proof-the-fourth-dimension-is-expanding-at-the-velocity-of-light-dx4-dtic-as-a-foundational-law-of-physics/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: x4=ict, ergo dx4/dt=ic</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-15T16:37:21+00:00</news:publication_date><news:title>The McGucken Principle and Proof: The Fourth Dimension Is Expanding at the Velocity of Light dx4/dt=ic as a Foundational Law of Physics</news:title><news:keywords>physics, science, relativity, philosophy, quantum-mechanics</news:keywords></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/15/the-mcgucken-invariance-in-einsteins-lightning-train-thought-experiment-lorentz-covariant-construction-and-measurement-based-universal-simultaneity/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: x4=ict, ergo dx4/dt=ic</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-15T15:24:58+00:00</news:publication_date><news:title>The McGucken Invariance in Einstein’s Lightning–Train Thought Experiment: Lorentz–Covariant Construction and Measurement‑Based Universal Simultaneity</news:title></news:news></url><url><loc>https://elliotmcguckenphysics.com/2026/04/15/the-mcgucken-invariance-einsteins-simultaneity-how-different-trains-can-agree-on-now/</loc><news:news><news:publication><news:name>The McGucken Principle: The fourth dimension x4 is expanding at the velocity of light c: x4=ict, ergo dx4/dt=ic</news:name><news:language>en</news:language></news:publication><news:publication_date>2026-04-15T15:18:51+00:00</news:publication_date><news:title>The McGucken Invariance &#038; 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