PhysicsShort
The Chaos of a Double Pendulum Explained
Watch two nearly identical double pendulums rapidly diverge and discover why tiny differences make chaotic systems difficult to predict.
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ShortMathematics
What Is an Integral? Calculus Explained Visually
See how Riemann sums turn infinitely thin slices into area, then connect that idea to antiderivatives through the fundamental theorem of calculus.
VideoPhysics
Navier–Stokes Equations From Scratch
Build the Navier–Stokes equations from conservation laws and see how pressure, viscosity and acceleration describe the motion of a fluid.
VideoMathematics
The Geometry of Hyperbolic Space Explained
Enter the Poincaré disk and learn how negative curvature changes parallel lines, triangle angles, distance and tessellations.