Earlier this week, the company successfully tested the Central Solenoid Model Coil (CSMC), a crucial component of its SPARC tokamak reactor design that could one day help produce carbon-free energy.

“It basically makes components for either circuit boards or some of the different solenoids that are out there. So, a copper coil that is used for either inductance, resistance or sometimes to ...

A coil of wire, or solenoid, consists of a wire coiled up into a spiral shape. When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet.

A coil of wire, or solenoid, consists of a wire coiled up into a spiral shape. When an electric current flows, the shape of the magnetic field is very similar to the field of a bar magnet.