Every concept, animated
Short animated explainers for 25+ concepts across 11 subjects. Watch, learn, and explore — all free, forever.
Big O Notation
How Big O notation measures algorithm efficiency — see O(1), O(log n), O(n), O(n²), and O(2ⁿ) growth rates compared in 3D.
AlgorithmsFibonacci Sequence
The Fibonacci sequence visualized — watch 1, 1, 2, 3, 5, 8, 13, 21 build into the golden spiral. See how the ratio converges to phi (1.618).
Number TheoryPythagorean Theorem
3D visualization of the Pythagorean theorem with squares built on each side of a right triangle.
MathematicsAC vs DC Current
3D comparison. DC: electrons flow one direction steadily (battery). AC: electrons oscillate back and forth 60 times per second (wall outlet). Show waveforms: flat line vs sine wave.
ElectromagnetismDark Matter
Dark matter explained — invisible mass that holds galaxies together, bends light, and makes up 27% of the universe.
AstrophysicsDoppler Effect
3D ambulance moving with circular wave fronts. Waves compress ahead (higher pitch, blue) and stretch behind (lower pitch, red). Stationary observer hears the pitch change as it passes.
Waves & OscillationsGravitational Fields
3D rubber sheet analogy. Place a heavy mass: sheet curves creating a well. Smaller objects roll toward the well following curved paths. Shows how mass warps spacetime causing gravity.
Classical MechanicsMitosis
Watch a cell divide through prophase, metaphase, anaphase, and telophase — the process that builds and repairs every living organism.
Cell Biology