Electricity, meanwhile, is delivered via a conductive brush that sweeps around a metal ring in the stationary base.

ECONOMIST: Monitor

McDonald was also the third physician in the world to perform a procedure called conductive keratoplasty -- a noninvasive surgery for farsightedness that involves using radio-frequency energy to heat small spots around the cornea.

CNN: Her vision: Better, clearer sight

Ms Thomson, who works at Stracathro Hospital, had attended numerous clinics and appointments over the years for recurrent ear infections, which resulted in a conductive hearing loss in both her ears where sounds are heard at a much quieter level.

BBC: bonebridge