Harmonic oscillators explain everything
Interactive science for iPhone
Tap, tinker, understand.
XYZ quest turns advanced science into pocket-sized labs: simulations you can touch, explanations you can follow, and math that earns its place on the screen.
15science categories
60+interactive topics
2modes per lab
⌕Search topics...
Welcome to Physics Sandbox
Tap, Tinker, Understand.
⚙Mechanics
The Universal Spring
♡Harmonic oscillators explain everything
Newton's Cradle
♡Momentum never disappears
Symmetry is Law
♡Why physics laws stay the same
✺Quantum
The Quantum Iceberg
♡Atoms marching in lockstep
Wave or Particle?
♡The double-slit experiment
A catalog with range
From quantum puzzles to living systems.
XYZ quest is organized like a serious science library, but each topic opens like a hands-on experiment.
MechanicsQuantumRelativityLight & WavesHeat & EntropyLife & BioMaterialsComputationPure MathFrontiers
Momentum never disappears
Newton's Cradle
Why physics laws stay the same
Symmetry is Law
Atoms marching in lockstep
The Quantum Iceberg
The double-slit experiment
Wave or Particle?
Lasers, phase, and waves
Coherent Light
Simulate First
Run playful, visual models of black holes, protein folding, lasers, neurons, chaos, transistors, and more.
Then Go Deeper
Switch from the lab to guided explanations with beginner and advanced views, equations, context, and intuition.
Built For Reuse
Search by topic, keep favorites, and return to the concepts you want to understand instead of memorizing once.
Coming to iOS