http://walthamstow.london/News/find-more-info-14/ A light-emitting diode (LED) is a strong state electrical circuit that produces light by the motion of electrons in a semiconductor material. LED light bulbs are constructed around solid-state semiconductor tools, so the production process most closely resembles that used to make digital products like PC motherboards. Thu, 02 Aug 2018 04:29:49 UTC en