The camera and a particle beam are looking down the barrel of a solenoid (made of wires wrapped around a toilet paper roll). You can see how the magnetic field twists the beam into a spiral.
None. Enjoy the show.
The documentation walks you through the process of building each of the tutorials and includes assets (graphics and GameObjects) for all of the demos.
Tabletop Experiments | Van de Graaff Demo | Ball magnets | Sun and Earth |
Flying Wrenches | Hovering Magnet | Beam through Solenoid | Geomagnetism | Antimatter in a Penning Trap |