# spacetime
Spacetime fuses space and time into a single four-dimensional fabric, and these five simulations are built around actually plotting on it rather than just describing it in words. The Minkowski Spacetime Diagram and Lorentz Transform — Minkowski Diagram let you draw worldlines and light cones and watch them tilt as velocity changes; Special Relativity — Time Dilation & Length Contraction shows the same distortion applied to a moving object's clock and ruler. The Twin Paradox turns that geometry into its most famous puzzle — why the traveling twin ages less — while Schwarzschild Geodesics — Black Hole Orbits & General Relativity pushes past flat spacetime into curved spacetime, tracing how light and matter orbit near a black hole.
Found: 5 simulations · 0 articles
🧪 Simulations (5)
📊 Facts
How many spacetime simulations are here?
5 simulations, split between flat (special-relativistic) spacetime and curved (general-relativistic) spacetime around a black hole.
Which two sims both draw Minkowski diagrams?
Lorentz Transform — Minkowski Diagram and Minkowski Spacetime Diagram both plot worldlines and light cones, letting you see how simultaneity shifts between reference frames.
Is there a black hole simulation?
Yes — Schwarzschild Geodesics traces orbits and light paths in the curved spacetime around a black hole, the general-relativistic counterpart to the flat-spacetime sims here.
Where can I see the twin paradox worked out?
The Twin Paradox simulation compares the aging of a stay-at-home twin against a traveling one directly on a spacetime diagram.
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