When an object moves extremely fast—close to the speed of light—certain basic assumptions that we take for granted no longer ...

When currents in wires run parallel, the wires attract due to the magnetic fields from the currents and the Lorentz force. The currents can also be run anti-parallel, making the wires repel. Place the ...

Stellarators use external magnetic coils to generate complex magnetic fields that confine plasma inside the reactor. But ...

It doesn’t, really. The wire vaporizes into plasma, and if the pulse is fast enough, the Lorentz force hold the plasma together. The rest is non-trivial high-voltage engineering. The original ...