Arc lamp Arc lamp An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc). The carbon arc light, which consists of an arc between carbon electrodes in air, invented by Humphry Davy in the first decade of the 1800s, was the first practical electric light. It was widely used starting in the 1870s for street and large building lighting until it was superseded by the incandescent light in the early 20th century. It continued in use in more specialized applications where a high intensity point light source was needed, such as
SALt lamp SALt lamp A SALt lamp is an LED lamp powered by the galvanic reaction of an anode with saline water. It also has a USB port to charge low-power mobile devices such as cellphones, smartphones, and mp3 players. The anode must be replaced approximately every six months and the saline water daily; sea water is usable. The SALt lamp was invented and is marketed by Aisa Mijeno, a Filipino inventor and entrepreneur. She is also a faculty member of Engineering at De La Salle University — Lipa, and a member of Greenpeace Philippines. The product concept was formed after living