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.

It uses a number of coils to produce a magnetic field to levitate the 3D printed plastic snail which contains the lighting element itself. The actively controlled levitation base uses a magnetic ...

The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core makes a temporary electromagnet. It loses its ...

The world’s first superconducting planar coil magnet array successfully created and controlled stellarator-relevant magnetic field structuresThe ...

Here, we describe how to use readily available materials to make a simple generator ... if the coil was wound around a metal core, as this helped to concentrate the magnetic field.

When you plug it in, the electric current passing through this coil generates a magnetic field. Meanwhile ... While the idea behind wireless charging is simple enough, the efficiency of power ...