Physics Demos

Watch the universe's rules in action

These interactive demos show real physics concepts you can see and control. Each one runs a simulation — not a video or animation, but actual physics happening in your browser. Press play and watch.

Time Dilation

How gravity changes time

Two identical clocks — one on Earth, one on a satellite. Watch gravity make them tick at different rates. This effect is real: GPS satellites correct for it every day.

More demos coming soon — stay tuned.

Each demo runs a real physics simulation in your browser. No tricks, no pre-recorded animations.