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Relativity — many frames, one invariant
relativity
Special relativity: the laws and the speed of light are the same in every inertial frame; observers disagree on time and length but agree on the invariant interval - many frames, one invariant truth. General relativity: gravity is the curvature of spacetime (its tests sealed on the gravity stick). Four pillars rest on the floors already seeded: special relativity (on Maxwell and the capstone), mass-energy (on the Hamiltonian), general relativity (on the Lagrangian, the Einstein-Hilbert action), and Poincare symmetry (on Noether). Relativity ties the whole physics region. The stick (stick_relativity_many_frames_one_invariant) seals the Lorentz factor and E = m c^2 (tools/seed_relativity.py).
- has part → Special relativity — many frames, one invariant — a pillar of relativity (Special relativity)
- has part → Mass-energy — E = m c^2 — a pillar of relativity (Mass-energy)
- has part → General relativity — gravity is the curvature of spacetime — a pillar of relativity (General relativity)
- has part → Poincaré symmetry — the group that feeds Noether — a pillar of relativity (Poincaré symmetry)
- part of → The Floor of Discovery — one floor, and by its design the fear of God — the invariant under many frames on the one map
- connects at → Entanglement — the world is not locally real — entanglement correlates without signalling: no faster-than-light message, so relativity ho
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