Physics Buddy vs Relativity Simulator

Master Physics with confidence using Physics Buddy—your all-in-one learning companion designed for students preparing for school exams, competitive exams, and self-study. Whether you're revising concepts, solving numerical problems, or looking for quick reference materials, Physics Buddy provides everything you need in one place. Key Features Comprehensive Physics Notes covering a wide range of topics. Handwritten Notes for easy understanding and quick revision. High-quality PDF study materials for offline learning. Powerful search to quickly find topics, formulas, and notes. Built-in Physics calculators for solving common numerical problems. Formula library with important equations for quick reference. Organized content for efficient and structured learning. Simple, fast, and user-friendly interface. Whether you're studying for board exams, entrance exams, or simply strengthening your understanding of Physics, Physics Buddy helps you learn smarter and study more effectively. Download Physics Buddy today and make Physics easier to learn, understand, and master

Relativity Simulator is an interactive relativity toolkit built strictly on the axiomatic foundations of modern physics. There is no "hard sci-fi" here — every result traces back to the Lorentz transformation of special relativity or the Einstein field equations of general relativity, and is verified against numerical truth fixtures. 【Real physics, not imagination】 · 20 interactive modules covering core effects from special relativity to black holes, gravitational waves, and curved spacetime; · Each module ships with precise charts, adjustable parameters, and a "Theory Card" with a fully visible derivation chain; · All demo numbers are recomputed locally on your device from real CODATA constants — nothing is fabricated. 【Phenomena you can verify yourself】 · Gravitational time dilation: why clocks run faster up high — ~80 ns/day faster atop Everest, ~38 µs/day faster on GPS satellites; · Twin paradox: fly to 4.22 light-years at 0.8c and the Earth twin ages 10.5 years while the traveler ages only 6.3; · Tidal disruption: why you get stretched into "spaghetti" falling into a black hole — small holes tear you outside the horizon, supermassive ones only after you cross it; · Plus light bending, gravitational lensing, the Schwarzschild horizon, frame dragging, and mass–energy equivalence E=mc². 【Built for learning and teaching】 · Volume-based progression: kinematics → gravitational field → black holes → cosmology → applications; · Bilingual (zh/en) system notes ship with every effect: derivation, physical quantities, and references; · Chinese / English UI follows your system language. 【Privacy first】 The app collects, stores, and transmits no personal data, embeds no third-party SDKs, and runs every computation locally on your device. Whether you are studying, teaching, or simply curious, Relativity Simulator lets you actually run the "invisible spacetime" and watch it.