Experience physics as it actually works. Every animation follows real laws. Every interaction reveals a deeper truth.
Before you observe it, a quantum particle exists everywhere at once. Its position is described by a wavefunction ψ(x,t) — a probability amplitude that extends across all space.
● Move your mouse to collapse the wavefunction
The most beautiful experiment in physics. A particle goes through both slits simultaneously — interfering with itself — until you try to detect which slit it took.
Each dot represents one particle. Watch the interference pattern emerge particle by particle.
Newton's laws govern 99% of what you experience. But they're an approximation — a special case of deeper physics that emerges when quantum effects average out.
● Click to spawn objects • Drag sliders to change physics
Reality is fields, not particles. Every charged particle creates an electromagnetic field that extends infinitely — and every other particle feels it.
Why does the past look different from the future? Because entropy always increases. The universe is winding down — and this is the only law that distinguishes past from future.
There is no universal "now." Two events simultaneous for you may not be for someone moving relative to you. Time and space are woven together — and you can see it.
We have quantum mechanics. We have general relativity. They contradict each other. The universe is waiting for someone to reconcile them.