article_snippet: The docking station has a coil within the charger, which generates an electrical field around the device.
article_snippet: When a suitable mobile phone is placed next to or on top of The docking station, a coil within the battery resonates with the primary field.
article_snippet: It then takes power from the magnetic field and converts and stores it back as electrical energy.
article_snippet: British scientist Michael Faraday added: